diff --git a/Cargo.lock b/Cargo.lock
index 84d4d26..166eb18 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -441,7 +441,7 @@ dependencies = [
 
 [[package]]
 name = "nod"
-version = "1.4.4"
+version = "2.0.0-alpha.1"
 dependencies = [
  "adler",
  "aes",
@@ -464,7 +464,7 @@ dependencies = [
 
 [[package]]
 name = "nodtool"
-version = "1.4.4"
+version = "2.0.0-alpha.1"
 dependencies = [
  "argp",
  "base16ct",
diff --git a/Cargo.toml b/Cargo.toml
index e35c167..56c6bb8 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -9,7 +9,7 @@ strip = "debuginfo"
 codegen-units = 1
 
 [workspace.package]
-version = "1.4.4"
+version = "2.0.0-alpha.1"
 edition = "2021"
 rust-version = "1.74"
 authors = ["Luke Street <luke@street.dev>"]
diff --git a/nod/src/disc/hashes.rs b/nod/src/disc/hashes.rs
index a9e0392..5605623 100644
--- a/nod/src/disc/hashes.rs
+++ b/nod/src/disc/hashes.rs
@@ -16,7 +16,7 @@ use crate::{
     },
     io::HashBytes,
     util::read::read_box_slice,
-    OpenOptions, Result, ResultContext, SECTOR_SIZE,
+    PartitionOptions, Result, ResultContext, SECTOR_SIZE,
 };
 
 /// In a sector, following the 0x400 byte block of hashes, each 0x400 bytes of decrypted data is
@@ -81,7 +81,7 @@ pub fn rebuild_hashes(reader: &mut DiscReader) -> Result<()> {
 
     // Precompute hashes for zeroed sectors.
     const ZERO_H0_BYTES: &[u8] = &[0u8; HASHES_SIZE];
-    let zero_h0_hash = hash_bytes(ZERO_H0_BYTES);
+    let zero_h0_hash = sha1_hash(ZERO_H0_BYTES);
 
     let partitions = reader.partitions();
     let mut hash_tables = Vec::with_capacity(partitions.len());
@@ -97,8 +97,9 @@ pub fn rebuild_hashes(reader: &mut DiscReader) -> Result<()> {
 
         let group_count = hash_table.h3_hashes.len();
         let mutex = Arc::new(Mutex::new(hash_table));
+        let partition_options = PartitionOptions { validate_hashes: false };
         (0..group_count).into_par_iter().try_for_each_with(
-            (reader.open_partition(part.index, &OpenOptions::default())?, mutex.clone()),
+            (reader.open_partition(part.index, &partition_options)?, mutex.clone()),
             |(stream, mutex), h3_index| -> Result<()> {
                 let mut result = HashResult::new_box_zeroed()?;
                 let mut data_buf = <[u8]>::new_box_zeroed_with_elems(SECTOR_DATA_SIZE)?;
@@ -122,7 +123,7 @@ pub fn rebuild_hashes(reader: &mut DiscReader) -> Result<()> {
                                 .read_exact(&mut data_buf)
                                 .with_context(|| format!("Reading sector {}", part_sector))?;
                             for h0_index in 0..NUM_H0_HASHES {
-                                let h0_hash = hash_bytes(array_ref![
+                                let h0_hash = sha1_hash(array_ref![
                                     data_buf,
                                     h0_index * HASHES_SIZE,
                                     HASHES_SIZE
@@ -196,9 +197,6 @@ pub fn rebuild_hashes(reader: &mut DiscReader) -> Result<()> {
     Ok(())
 }
 
+/// Hashes a byte slice with SHA-1.
 #[inline]
-pub fn hash_bytes(buf: &[u8]) -> HashBytes {
-    let mut hasher = Sha1::new();
-    hasher.update(buf);
-    hasher.finalize().into()
-}
+pub fn sha1_hash(buf: &[u8]) -> HashBytes { HashBytes::from(Sha1::digest(buf)) }
diff --git a/nod/src/disc/mod.rs b/nod/src/disc/mod.rs
index 144f961..44ea033 100644
--- a/nod/src/disc/mod.rs
+++ b/nod/src/disc/mod.rs
@@ -24,7 +24,7 @@ pub(crate) mod wii;
 
 pub use fst::{Fst, Node, NodeKind};
 pub use streams::{FileStream, OwnedFileStream, WindowedStream};
-pub use wii::{SignedHeader, Ticket, TicketLimit, TmdHeader, REGION_SIZE};
+pub use wii::{ContentMetadata, SignedHeader, Ticket, TicketLimit, TmdHeader, REGION_SIZE};
 
 /// Size in bytes of a disc sector. (32 KiB)
 pub const SECTOR_SIZE: usize = 0x8000;
@@ -90,6 +90,14 @@ impl DiscHeader {
     /// Whether this is a Wii disc.
     #[inline]
     pub fn is_wii(&self) -> bool { self.wii_magic == WII_MAGIC }
+
+    /// Whether the disc has partition data hashes.
+    #[inline]
+    pub fn has_partition_hashes(&self) -> bool { self.no_partition_hashes == 0 }
+
+    /// Whether the disc has partition data encryption.
+    #[inline]
+    pub fn has_partition_encryption(&self) -> bool { self.no_partition_encryption == 0 }
 }
 
 /// A header describing the contents of a disc partition.
@@ -379,19 +387,23 @@ impl PartitionMeta {
     /// A view into the disc header.
     #[inline]
     pub fn header(&self) -> &DiscHeader {
-        DiscHeader::ref_from_bytes(&self.raw_boot[..size_of::<DiscHeader>()]).unwrap()
+        DiscHeader::ref_from_bytes(&self.raw_boot[..size_of::<DiscHeader>()])
+            .expect("Invalid header alignment")
     }
 
     /// A view into the partition header.
     #[inline]
     pub fn partition_header(&self) -> &PartitionHeader {
-        PartitionHeader::ref_from_bytes(&self.raw_boot[size_of::<DiscHeader>()..]).unwrap()
+        PartitionHeader::ref_from_bytes(&self.raw_boot[size_of::<DiscHeader>()..])
+            .expect("Invalid partition header alignment")
     }
 
     /// A view into the apploader header.
     #[inline]
     pub fn apploader_header(&self) -> &ApploaderHeader {
-        ApploaderHeader::ref_from_prefix(&self.raw_apploader).unwrap().0
+        ApploaderHeader::ref_from_prefix(&self.raw_apploader)
+            .expect("Invalid apploader alignment")
+            .0
     }
 
     /// A view into the file system table (FST).
@@ -400,18 +412,29 @@ impl PartitionMeta {
 
     /// A view into the DOL header.
     #[inline]
-    pub fn dol_header(&self) -> &DolHeader { DolHeader::ref_from_prefix(&self.raw_dol).unwrap().0 }
+    pub fn dol_header(&self) -> &DolHeader {
+        DolHeader::ref_from_prefix(&self.raw_dol).expect("Invalid DOL alignment").0
+    }
 
     /// A view into the ticket. (Wii only)
     #[inline]
     pub fn ticket(&self) -> Option<&Ticket> {
-        self.raw_ticket.as_ref().and_then(|v| Ticket::ref_from_bytes(v).ok())
+        let raw_ticket = self.raw_ticket.as_deref()?;
+        Some(Ticket::ref_from_bytes(raw_ticket).expect("Invalid ticket alignment"))
     }
 
     /// A view into the TMD. (Wii only)
     #[inline]
     pub fn tmd_header(&self) -> Option<&TmdHeader> {
-        self.raw_tmd.as_ref().and_then(|v| TmdHeader::ref_from_prefix(v).ok().map(|(v, _)| v))
+        let raw_tmd = self.raw_tmd.as_deref()?;
+        Some(TmdHeader::ref_from_prefix(raw_tmd).expect("Invalid TMD alignment").0)
+    }
+
+    /// A view into the TMD content metadata. (Wii only)
+    #[inline]
+    pub fn content_metadata(&self) -> Option<&[ContentMetadata]> {
+        let raw_cmd = &self.raw_tmd.as_deref()?[size_of::<TmdHeader>()..];
+        Some(<[ContentMetadata]>::ref_from_bytes(raw_cmd).expect("Invalid CMD alignment"))
     }
 }
 
diff --git a/nod/src/disc/reader.rs b/nod/src/disc/reader.rs
index 14cab0c..645ba55 100644
--- a/nod/src/disc/reader.rs
+++ b/nod/src/disc/reader.rs
@@ -3,7 +3,7 @@ use std::{
     io::{BufRead, Read, Seek, SeekFrom},
 };
 
-use zerocopy::FromZeros;
+use zerocopy::{FromBytes, FromZeros};
 
 use super::{
     gcn::PartitionGC,
@@ -16,15 +16,10 @@ use crate::{
     disc::wii::REGION_OFFSET,
     io::block::{Block, BlockIO, PartitionInfo},
     util::read::{read_box, read_from, read_vec},
-    DiscMeta, Error, OpenOptions, Result, ResultContext, SECTOR_SIZE,
+    DiscMeta, Error, OpenOptions, PartitionEncryptionMode, PartitionOptions, Result, ResultContext,
+    SECTOR_SIZE,
 };
 
-#[derive(Debug, Eq, PartialEq, Copy, Clone)]
-pub enum EncryptionMode {
-    Encrypted,
-    Decrypted,
-}
-
 pub struct DiscReader {
     io: Box<dyn BlockIO>,
     block: Block,
@@ -33,7 +28,7 @@ pub struct DiscReader {
     sector_buf: Box<[u8; SECTOR_SIZE]>,
     sector_idx: u32,
     pos: u64,
-    mode: EncryptionMode,
+    mode: PartitionEncryptionMode,
     disc_header: Box<DiscHeader>,
     pub(crate) partitions: Vec<PartitionInfo>,
     hash_tables: Vec<HashTable>,
@@ -71,11 +66,7 @@ impl DiscReader {
             sector_buf: <[u8; SECTOR_SIZE]>::new_box_zeroed()?,
             sector_idx: u32::MAX,
             pos: 0,
-            mode: if options.rebuild_encryption {
-                EncryptionMode::Encrypted
-            } else {
-                EncryptionMode::Decrypted
-            },
+            mode: options.partition_encryption,
             disc_header: DiscHeader::new_box_zeroed()?,
             partitions: vec![],
             hash_tables: vec![],
@@ -84,11 +75,28 @@ impl DiscReader {
         let disc_header: Box<DiscHeader> = read_box(&mut reader).context("Reading disc header")?;
         reader.disc_header = disc_header;
         if reader.disc_header.is_wii() {
+            if reader.disc_header.has_partition_encryption()
+                && !reader.disc_header.has_partition_hashes()
+            {
+                return Err(Error::DiscFormat(
+                    "Wii disc is encrypted but has no partition hashes".to_string(),
+                ));
+            }
+            if !reader.disc_header.has_partition_hashes()
+                && options.partition_encryption == PartitionEncryptionMode::ForceEncrypted
+            {
+                return Err(Error::Other(
+                    "Unsupported: Rebuilding encryption for Wii disc without hashes".to_string(),
+                ));
+            }
             reader.seek(SeekFrom::Start(REGION_OFFSET)).context("Seeking to region info")?;
             reader.region = Some(read_from(&mut reader).context("Reading region info")?);
             reader.partitions = read_partition_info(&mut reader)?;
             // Rebuild hashes if the format requires it
-            if (options.rebuild_encryption || options.validate_hashes) && meta.needs_hash_recovery {
+            if options.partition_encryption != PartitionEncryptionMode::AsIs
+                && meta.needs_hash_recovery
+                && reader.disc_header.has_partition_hashes()
+            {
                 rebuild_hashes(&mut reader)?;
             }
         }
@@ -125,7 +133,7 @@ impl DiscReader {
     pub fn open_partition(
         &self,
         index: usize,
-        options: &OpenOptions,
+        options: &PartitionOptions,
     ) -> Result<Box<dyn PartitionBase>> {
         if self.disc_header.is_gamecube() {
             if index == 0 {
@@ -145,7 +153,7 @@ impl DiscReader {
     pub fn open_partition_kind(
         &self,
         kind: PartitionKind,
-        options: &OpenOptions,
+        options: &PartitionOptions,
     ) -> Result<Box<dyn PartitionBase>> {
         if self.disc_header.is_gamecube() {
             if kind == PartitionKind::Data {
@@ -182,30 +190,51 @@ impl BufRead for DiscReader {
 
         // Read new sector into buffer
         if abs_sector != self.sector_idx {
-            if let Some(partition) = partition {
-                match self.mode {
-                    EncryptionMode::Decrypted => self.block.decrypt(
+            match (self.mode, partition, self.disc_header.has_partition_encryption()) {
+                (PartitionEncryptionMode::Original, Some(partition), true)
+                | (PartitionEncryptionMode::ForceEncrypted, Some(partition), _) => {
+                    self.block.encrypt(
                         self.sector_buf.as_mut(),
                         self.block_buf.as_ref(),
                         abs_sector,
                         partition,
-                    )?,
-                    EncryptionMode::Encrypted => self.block.encrypt(
-                        self.sector_buf.as_mut(),
-                        self.block_buf.as_ref(),
-                        abs_sector,
-                        partition,
-                    )?,
+                    )?;
+                }
+                (PartitionEncryptionMode::ForceDecrypted, Some(partition), _) => {
+                    self.block.decrypt(
+                        self.sector_buf.as_mut(),
+                        self.block_buf.as_ref(),
+                        abs_sector,
+                        partition,
+                    )?;
+                }
+                (PartitionEncryptionMode::AsIs, _, _) | (_, None, _) | (_, _, false) => {
+                    self.block.copy_raw(
+                        self.sector_buf.as_mut(),
+                        self.block_buf.as_ref(),
+                        abs_sector,
+                        &self.disc_header,
+                    )?;
                 }
-            } else {
-                self.block.copy_raw(
-                    self.sector_buf.as_mut(),
-                    self.block_buf.as_ref(),
-                    abs_sector,
-                    &self.disc_header,
-                )?;
             }
             self.sector_idx = abs_sector;
+
+            if self.sector_idx == 0
+                && self.disc_header.is_wii()
+                && matches!(
+                    self.mode,
+                    PartitionEncryptionMode::ForceDecrypted
+                        | PartitionEncryptionMode::ForceEncrypted
+                )
+            {
+                let (disc_header, _) = DiscHeader::mut_from_prefix(self.sector_buf.as_mut())
+                    .expect("Invalid disc header alignment");
+                disc_header.no_partition_encryption = match self.mode {
+                    PartitionEncryptionMode::ForceDecrypted => 1,
+                    PartitionEncryptionMode::ForceEncrypted => 0,
+                    _ => unreachable!(),
+                };
+            }
         }
 
         // Read from sector buffer
@@ -273,8 +302,19 @@ fn read_partition_info(reader: &mut DiscReader) -> Result<Vec<PartitionInfo>> {
                     "Partition {group_idx}:{part_idx} offset is not sector aligned",
                 )));
             }
+
+            let disc_header = reader.header();
             let data_start_offset = entry.offset() + header.data_off();
-            let data_end_offset = data_start_offset + header.data_size();
+            let mut data_size = header.data_size();
+            if data_size == 0 {
+                // Read until next partition or end of disc
+                // TODO: handle multiple partition groups
+                data_size = entries
+                    .get(part_idx + 1)
+                    .map(|part| part.offset() - data_start_offset)
+                    .unwrap_or(reader.disc_size() - data_start_offset);
+            }
+            let data_end_offset = data_start_offset + data_size;
             if data_start_offset % SECTOR_SIZE as u64 != 0
                 || data_end_offset % SECTOR_SIZE as u64 != 0
             {
@@ -293,13 +333,15 @@ fn read_partition_info(reader: &mut DiscReader) -> Result<Vec<PartitionInfo>> {
                 disc_header: DiscHeader::new_box_zeroed()?,
                 partition_header: PartitionHeader::new_box_zeroed()?,
                 hash_table: None,
+                has_encryption: disc_header.has_partition_encryption(),
+                has_hashes: disc_header.has_partition_hashes(),
             };
 
             let mut partition_reader = PartitionWii::new(
                 reader.io.clone(),
                 reader.disc_header.clone(),
                 &info,
-                &OpenOptions::default(),
+                &PartitionOptions { validate_hashes: false },
             )?;
             info.disc_header = read_box(&mut partition_reader).context("Reading disc header")?;
             info.partition_header =
diff --git a/nod/src/disc/wii.rs b/nod/src/disc/wii.rs
index 6541d29..9aca343 100644
--- a/nod/src/disc/wii.rs
+++ b/nod/src/disc/wii.rs
@@ -16,13 +16,13 @@ use crate::{
     array_ref,
     disc::streams::OwnedFileStream,
     io::{
-        aes_decrypt,
+        aes_cbc_decrypt,
         block::{Block, BlockIO, PartitionInfo},
-        KeyBytes,
+        HashBytes, KeyBytes,
     },
     static_assert,
     util::{div_rem, read::read_box_slice},
-    Error, OpenOptions, Result, ResultContext,
+    Error, PartitionOptions, Result, ResultContext,
 };
 
 /// Size in bytes of the hashes block in a Wii disc sector
@@ -179,7 +179,7 @@ impl Ticket {
             format!("unknown common key index {}", self.common_key_idx),
         ))?;
         let mut title_key = self.title_key;
-        aes_decrypt(common_key, iv, &mut title_key);
+        aes_cbc_decrypt(common_key, &iv, &mut title_key);
         Ok(title_key)
     }
 }
@@ -231,6 +231,24 @@ pub struct TmdHeader {
 
 static_assert!(size_of::<TmdHeader>() == 0x1E4);
 
+/// TMD content metadata
+#[derive(Clone, Debug, PartialEq, FromBytes, IntoBytes, Immutable, KnownLayout)]
+#[repr(C, align(4))]
+pub struct ContentMetadata {
+    /// Content ID
+    pub content_id: U32,
+    /// Content index
+    pub content_index: U16,
+    /// Content type
+    pub content_type: U16,
+    /// Content size
+    pub size: U64,
+    /// Content hash
+    pub hash: HashBytes,
+}
+
+static_assert!(size_of::<ContentMetadata>() == 0x24);
+
 pub const H3_TABLE_SIZE: usize = 0x18000;
 
 #[derive(Debug, Clone, PartialEq, FromBytes, IntoBytes, Immutable, KnownLayout)]
@@ -275,10 +293,10 @@ pub struct PartitionWii {
     sector_buf: Box<[u8; SECTOR_SIZE]>,
     sector: u32,
     pos: u64,
-    verify: bool,
-    raw_tmd: Box<[u8]>,
-    raw_cert_chain: Box<[u8]>,
-    raw_h3_table: Box<[u8]>,
+    options: PartitionOptions,
+    raw_tmd: Option<Box<[u8]>>,
+    raw_cert_chain: Option<Box<[u8]>>,
+    raw_h3_table: Option<Box<[u8]>>,
 }
 
 impl Clone for PartitionWii {
@@ -292,7 +310,7 @@ impl Clone for PartitionWii {
             sector_buf: <[u8; SECTOR_SIZE]>::new_box_zeroed().unwrap(),
             sector: u32::MAX,
             pos: 0,
-            verify: self.verify,
+            options: self.options.clone(),
             raw_tmd: self.raw_tmd.clone(),
             raw_cert_chain: self.raw_cert_chain.clone(),
             raw_h3_table: self.raw_h3_table.clone(),
@@ -305,29 +323,43 @@ impl PartitionWii {
         inner: Box<dyn BlockIO>,
         disc_header: Box<DiscHeader>,
         partition: &PartitionInfo,
-        options: &OpenOptions,
+        options: &PartitionOptions,
     ) -> Result<Box<Self>> {
         let block_size = inner.block_size();
         let mut reader = PartitionGC::new(inner, disc_header)?;
 
         // Read TMD, cert chain, and H3 table
         let offset = partition.start_sector as u64 * SECTOR_SIZE as u64;
-        reader
-            .seek(SeekFrom::Start(offset + partition.header.tmd_off()))
-            .context("Seeking to TMD offset")?;
-        let raw_tmd: Box<[u8]> = read_box_slice(&mut reader, partition.header.tmd_size() as usize)
-            .context("Reading TMD")?;
-        reader
-            .seek(SeekFrom::Start(offset + partition.header.cert_chain_off()))
-            .context("Seeking to cert chain offset")?;
-        let raw_cert_chain: Box<[u8]> =
-            read_box_slice(&mut reader, partition.header.cert_chain_size() as usize)
-                .context("Reading cert chain")?;
-        reader
-            .seek(SeekFrom::Start(offset + partition.header.h3_table_off()))
-            .context("Seeking to H3 table offset")?;
-        let raw_h3_table: Box<[u8]> =
-            read_box_slice(&mut reader, H3_TABLE_SIZE).context("Reading H3 table")?;
+        let raw_tmd = if partition.header.tmd_size() != 0 {
+            reader
+                .seek(SeekFrom::Start(offset + partition.header.tmd_off()))
+                .context("Seeking to TMD offset")?;
+            Some(
+                read_box_slice::<u8, _>(&mut reader, partition.header.tmd_size() as usize)
+                    .context("Reading TMD")?,
+            )
+        } else {
+            None
+        };
+        let raw_cert_chain = if partition.header.cert_chain_size() != 0 {
+            reader
+                .seek(SeekFrom::Start(offset + partition.header.cert_chain_off()))
+                .context("Seeking to cert chain offset")?;
+            Some(
+                read_box_slice::<u8, _>(&mut reader, partition.header.cert_chain_size() as usize)
+                    .context("Reading cert chain")?,
+            )
+        } else {
+            None
+        };
+        let raw_h3_table = if partition.has_hashes {
+            reader
+                .seek(SeekFrom::Start(offset + partition.header.h3_table_off()))
+                .context("Seeking to H3 table offset")?;
+            Some(read_box_slice::<u8, _>(&mut reader, H3_TABLE_SIZE).context("Reading H3 table")?)
+        } else {
+            None
+        };
 
         Ok(Box::new(Self {
             io: reader.into_inner(),
@@ -338,7 +370,7 @@ impl PartitionWii {
             sector_buf: <[u8; SECTOR_SIZE]>::new_box_zeroed()?,
             sector: u32::MAX,
             pos: 0,
-            verify: options.validate_hashes,
+            options: options.clone(),
             raw_tmd,
             raw_cert_chain,
             raw_h3_table,
@@ -348,37 +380,60 @@ impl PartitionWii {
 
 impl BufRead for PartitionWii {
     fn fill_buf(&mut self) -> io::Result<&[u8]> {
-        let part_sector = (self.pos / SECTOR_DATA_SIZE as u64) as u32;
+        let part_sector = if self.partition.has_hashes {
+            (self.pos / SECTOR_DATA_SIZE as u64) as u32
+        } else {
+            (self.pos / SECTOR_SIZE as u64) as u32
+        };
         let abs_sector = self.partition.data_start_sector + part_sector;
         if abs_sector >= self.partition.data_end_sector {
             return Ok(&[]);
         }
-        let block_idx =
-            (abs_sector as u64 * SECTOR_SIZE as u64 / self.block_buf.len() as u64) as u32;
 
         // Read new block if necessary
+        let block_idx =
+            (abs_sector as u64 * SECTOR_SIZE as u64 / self.block_buf.len() as u64) as u32;
         if block_idx != self.block_idx {
-            self.block =
-                self.io.read_block(self.block_buf.as_mut(), block_idx, Some(&self.partition))?;
+            self.block = self.io.read_block(
+                self.block_buf.as_mut(),
+                block_idx,
+                self.partition.has_encryption.then_some(&self.partition),
+            )?;
             self.block_idx = block_idx;
         }
 
         // Decrypt sector if necessary
         if abs_sector != self.sector {
-            self.block.decrypt(
-                self.sector_buf.as_mut(),
-                self.block_buf.as_ref(),
-                abs_sector,
-                &self.partition,
-            )?;
-            if self.verify {
-                verify_hashes(self.sector_buf.as_ref(), part_sector, self.raw_h3_table.as_ref())?;
+            if self.partition.has_encryption {
+                self.block.decrypt(
+                    self.sector_buf.as_mut(),
+                    self.block_buf.as_ref(),
+                    abs_sector,
+                    &self.partition,
+                )?;
+            } else {
+                self.block.copy_raw(
+                    self.sector_buf.as_mut(),
+                    self.block_buf.as_ref(),
+                    abs_sector,
+                    &self.partition.disc_header,
+                )?;
+            }
+            if self.options.validate_hashes {
+                if let Some(h3_table) = self.raw_h3_table.as_deref() {
+                    verify_hashes(self.sector_buf.as_ref(), part_sector, h3_table)?;
+                }
             }
             self.sector = abs_sector;
         }
 
-        let offset = (self.pos % SECTOR_DATA_SIZE as u64) as usize;
-        Ok(&self.sector_buf[HASHES_SIZE + offset..])
+        if self.partition.has_hashes {
+            let offset = (self.pos % SECTOR_DATA_SIZE as u64) as usize;
+            Ok(&self.sector_buf[HASHES_SIZE + offset..])
+        } else {
+            let offset = (self.pos % SECTOR_SIZE as u64) as usize;
+            Ok(&self.sector_buf[offset..])
+        }
     }
 
     #[inline]
@@ -489,9 +544,9 @@ impl PartitionBase for PartitionWii {
         self.seek(SeekFrom::Start(0)).context("Seeking to partition header")?;
         let mut meta = read_part_meta(self, true)?;
         meta.raw_ticket = Some(Box::from(self.partition.header.ticket.as_bytes()));
-        meta.raw_tmd = Some(self.raw_tmd.clone());
-        meta.raw_cert_chain = Some(self.raw_cert_chain.clone());
-        meta.raw_h3_table = Some(self.raw_h3_table.clone());
+        meta.raw_tmd = self.raw_tmd.clone();
+        meta.raw_cert_chain = self.raw_cert_chain.clone();
+        meta.raw_h3_table = self.raw_h3_table.clone();
         Ok(meta)
     }
 
diff --git a/nod/src/io/block.rs b/nod/src/io/block.rs
index a322fb2..a56e699 100644
--- a/nod/src/io/block.rs
+++ b/nod/src/io/block.rs
@@ -15,7 +15,8 @@ use crate::{
         DiscHeader, PartitionHeader, PartitionKind, GCN_MAGIC, SECTOR_SIZE, WII_MAGIC,
     },
     io::{
-        aes_decrypt, aes_encrypt, split::SplitFileReader, DiscMeta, Format, KeyBytes, MagicBytes,
+        aes_cbc_decrypt, aes_cbc_encrypt, split::SplitFileReader, DiscMeta, Format, KeyBytes,
+        MagicBytes,
     },
     util::{lfg::LaggedFibonacci, read::read_from},
     Error, Result, ResultContext,
@@ -218,9 +219,9 @@ pub struct PartitionInfo {
     pub kind: PartitionKind,
     /// The start sector of the partition.
     pub start_sector: u32,
-    /// The start sector of the partition's (encrypted) data.
+    /// The start sector of the partition's data.
     pub data_start_sector: u32,
-    /// The end sector of the partition's (encrypted) data.
+    /// The end sector of the partition's data.
     pub data_end_sector: u32,
     /// The AES key for the partition, also known as the "title key".
     pub key: KeyBytes,
@@ -232,6 +233,10 @@ pub struct PartitionInfo {
     pub partition_header: Box<PartitionHeader>,
     /// The hash table for the partition, if rebuilt.
     pub hash_table: Option<HashTable>,
+    /// Whether the partition data is encrypted
+    pub has_encryption: bool,
+    /// Whether the partition data hashes are present
+    pub has_hashes: bool,
 }
 
 /// The block kind returned by [`BlockIO::read_block`].
@@ -239,6 +244,8 @@ pub struct PartitionInfo {
 pub enum Block {
     /// Raw data or encrypted Wii partition data
     Raw,
+    /// Encrypted Wii partition data
+    PartEncrypted,
     /// Decrypted Wii partition data
     PartDecrypted {
         /// Whether the sector has its hash block intact
@@ -264,6 +271,9 @@ impl Block {
         match self {
             Block::Raw => {
                 out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
+            }
+            Block::PartEncrypted => {
+                out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
                 decrypt_sector(out, partition);
             }
             Block::PartDecrypted { has_hashes } => {
@@ -296,6 +306,10 @@ impl Block {
         match self {
             Block::Raw => {
                 out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
+                encrypt_sector(out, partition);
+            }
+            Block::PartEncrypted => {
+                out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
             }
             Block::PartDecrypted { has_hashes } => {
                 out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
@@ -327,15 +341,9 @@ impl Block {
         disc_header: &DiscHeader,
     ) -> io::Result<()> {
         match self {
-            Block::Raw => {
+            Block::Raw | Block::PartEncrypted | Block::PartDecrypted { .. } => {
                 out.copy_from_slice(block_sector::<SECTOR_SIZE>(data, abs_sector)?);
             }
-            Block::PartDecrypted { .. } => {
-                return Err(io::Error::new(
-                    io::ErrorKind::InvalidData,
-                    "Cannot copy decrypted data as raw",
-                ));
-            }
             Block::Junk => generate_junk(out, abs_sector, None, disc_header),
             Block::Zero => out.fill(0),
         }
@@ -406,15 +414,15 @@ fn rebuild_hash_block(out: &mut [u8; SECTOR_SIZE], part_sector: u32, partition:
 }
 
 fn encrypt_sector(out: &mut [u8; SECTOR_SIZE], partition: &PartitionInfo) {
-    aes_encrypt(&partition.key, [0u8; 16], &mut out[..HASHES_SIZE]);
+    aes_cbc_encrypt(&partition.key, &[0u8; 16], &mut out[..HASHES_SIZE]);
     // Data IV from encrypted hash block
     let iv = *array_ref![out, 0x3D0, 16];
-    aes_encrypt(&partition.key, iv, &mut out[HASHES_SIZE..]);
+    aes_cbc_encrypt(&partition.key, &iv, &mut out[HASHES_SIZE..]);
 }
 
 fn decrypt_sector(out: &mut [u8; SECTOR_SIZE], partition: &PartitionInfo) {
     // Data IV from encrypted hash block
     let iv = *array_ref![out, 0x3D0, 16];
-    aes_decrypt(&partition.key, [0u8; 16], &mut out[..HASHES_SIZE]);
-    aes_decrypt(&partition.key, iv, &mut out[HASHES_SIZE..]);
+    aes_cbc_decrypt(&partition.key, &[0u8; 16], &mut out[..HASHES_SIZE]);
+    aes_cbc_decrypt(&partition.key, &iv, &mut out[HASHES_SIZE..]);
 }
diff --git a/nod/src/io/ciso.rs b/nod/src/io/ciso.rs
index 89b81f2..2f6466e 100644
--- a/nod/src/io/ciso.rs
+++ b/nod/src/io/ciso.rs
@@ -85,7 +85,7 @@ impl BlockIO for DiscIOCISO {
         &mut self,
         out: &mut [u8],
         block: u32,
-        _partition: Option<&PartitionInfo>,
+        partition: Option<&PartitionInfo>,
     ) -> io::Result<Block> {
         if block >= CISO_MAP_SIZE as u32 {
             // Out of bounds
@@ -109,7 +109,11 @@ impl BlockIO for DiscIOCISO {
             + phys_block as u64 * self.header.block_size.get() as u64;
         self.inner.seek(SeekFrom::Start(file_offset))?;
         self.inner.read_exact(out)?;
-        Ok(Block::Raw)
+
+        match partition {
+            Some(partition) if partition.has_encryption => Ok(Block::PartEncrypted),
+            _ => Ok(Block::Raw),
+        }
     }
 
     fn block_size_internal(&self) -> u32 { self.header.block_size.get() }
diff --git a/nod/src/io/gcz.rs b/nod/src/io/gcz.rs
index 94ae326..c12028f 100644
--- a/nod/src/io/gcz.rs
+++ b/nod/src/io/gcz.rs
@@ -83,7 +83,7 @@ impl BlockIO for DiscIOGCZ {
         &mut self,
         out: &mut [u8],
         block: u32,
-        _partition: Option<&PartitionInfo>,
+        partition: Option<&PartitionInfo>,
     ) -> io::Result<Block> {
         if block >= self.header.block_count.get() {
             // Out of bounds
@@ -166,7 +166,11 @@ impl BlockIO for DiscIOGCZ {
             // Copy uncompressed block
             out.copy_from_slice(self.block_buf.as_slice());
         }
-        Ok(Block::Raw)
+
+        match partition {
+            Some(partition) if partition.has_encryption => Ok(Block::PartEncrypted),
+            _ => Ok(Block::Raw),
+        }
     }
 
     fn block_size_internal(&self) -> u32 { self.header.block_size.get() }
diff --git a/nod/src/io/iso.rs b/nod/src/io/iso.rs
index 484b85b..aea206f 100644
--- a/nod/src/io/iso.rs
+++ b/nod/src/io/iso.rs
@@ -31,7 +31,7 @@ impl BlockIO for DiscIOISO {
         &mut self,
         out: &mut [u8],
         block: u32,
-        _partition: Option<&PartitionInfo>,
+        partition: Option<&PartitionInfo>,
     ) -> io::Result<Block> {
         let offset = block as u64 * SECTOR_SIZE as u64;
         if offset >= self.stream_len {
@@ -48,7 +48,11 @@ impl BlockIO for DiscIOISO {
         } else {
             self.inner.read_exact(out)?;
         }
-        Ok(Block::Raw)
+
+        match partition {
+            Some(partition) if partition.has_encryption => Ok(Block::PartEncrypted),
+            _ => Ok(Block::Raw),
+        }
     }
 
     fn block_size_internal(&self) -> u32 { SECTOR_SIZE as u32 }
diff --git a/nod/src/io/mod.rs b/nod/src/io/mod.rs
index a7cd586..a8e1e8b 100644
--- a/nod/src/io/mod.rs
+++ b/nod/src/io/mod.rs
@@ -124,19 +124,19 @@ pub struct DiscMeta {
 }
 
 /// Encrypts data in-place using AES-128-CBC with the given key and IV.
-#[inline(always)]
-pub(crate) fn aes_encrypt(key: &KeyBytes, iv: KeyBytes, data: &mut [u8]) {
+/// Requires the data length to be a multiple of the AES block size (16 bytes).
+pub fn aes_cbc_encrypt(key: &KeyBytes, iv: &KeyBytes, data: &mut [u8]) {
     use aes::cipher::{block_padding::NoPadding, BlockEncryptMut, KeyIvInit};
-    <cbc::Encryptor<aes::Aes128>>::new(key.into(), &aes::Block::from(iv))
+    <cbc::Encryptor<aes::Aes128>>::new(key.into(), iv.into())
         .encrypt_padded_mut::<NoPadding>(data, data.len())
-        .unwrap(); // Safe: using NoPadding
+        .unwrap();
 }
 
 /// Decrypts data in-place using AES-128-CBC with the given key and IV.
-#[inline(always)]
-pub(crate) fn aes_decrypt(key: &KeyBytes, iv: KeyBytes, data: &mut [u8]) {
+/// Requires the data length to be a multiple of the AES block size (16 bytes).
+pub fn aes_cbc_decrypt(key: &KeyBytes, iv: &KeyBytes, data: &mut [u8]) {
     use aes::cipher::{block_padding::NoPadding, BlockDecryptMut, KeyIvInit};
-    <cbc::Decryptor<aes::Aes128>>::new(key.into(), &aes::Block::from(iv))
+    <cbc::Decryptor<aes::Aes128>>::new(key.into(), iv.into())
         .decrypt_padded_mut::<NoPadding>(data)
-        .unwrap(); // Safe: using NoPadding
+        .unwrap();
 }
diff --git a/nod/src/io/nfs.rs b/nod/src/io/nfs.rs
index 776ecb7..799ee47 100644
--- a/nod/src/io/nfs.rs
+++ b/nod/src/io/nfs.rs
@@ -9,9 +9,10 @@ use std::{
 use zerocopy::{big_endian::U32, FromBytes, FromZeros, Immutable, IntoBytes, KnownLayout};
 
 use crate::{
+    array_ref_mut,
     disc::SECTOR_SIZE,
     io::{
-        aes_decrypt,
+        aes_cbc_decrypt,
         block::{Block, BlockIO, PartitionInfo, NFS_MAGIC},
         split::SplitFileReader,
         Format, KeyBytes, MagicBytes,
@@ -125,18 +126,15 @@ impl BlockIO for DiscIONFS {
         self.inner.read_exact(out)?;
 
         // Decrypt
-        let iv_bytes = sector.to_be_bytes();
-        #[rustfmt::skip]
-            let iv: KeyBytes = [
-            0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
-            iv_bytes[0], iv_bytes[1], iv_bytes[2], iv_bytes[3],
-        ];
-        aes_decrypt(&self.key, iv, out);
+        let mut iv = [0u8; 0x10];
+        *array_ref_mut!(iv, 12, 4) = sector.to_be_bytes();
+        aes_cbc_decrypt(&self.key, &iv, out);
 
-        if partition.is_some() {
-            Ok(Block::PartDecrypted { has_hashes: true })
-        } else {
-            Ok(Block::Raw)
+        match partition {
+            Some(partition) if partition.has_encryption => {
+                Ok(Block::PartDecrypted { has_hashes: true })
+            }
+            _ => Ok(Block::Raw),
         }
     }
 
diff --git a/nod/src/io/tgc.rs b/nod/src/io/tgc.rs
index 1da150a..0508c9e 100644
--- a/nod/src/io/tgc.rs
+++ b/nod/src/io/tgc.rs
@@ -96,7 +96,7 @@ impl BlockIO for DiscIOTGC {
         &mut self,
         out: &mut [u8],
         block: u32,
-        _partition: Option<&PartitionInfo>,
+        partition: Option<&PartitionInfo>,
     ) -> io::Result<Block> {
         let offset = self.header.header_offset.get() as u64 + block as u64 * SECTOR_SIZE as u64;
         if offset >= self.stream_len {
@@ -137,7 +137,10 @@ impl BlockIO for DiscIOTGC {
                 .copy_from_slice(&self.fst[fst_offset..fst_offset + copy_len]);
         }
 
-        Ok(Block::Raw)
+        match partition {
+            Some(partition) if partition.has_encryption => Ok(Block::PartEncrypted),
+            _ => Ok(Block::Raw),
+        }
     }
 
     fn block_size_internal(&self) -> u32 { SECTOR_SIZE as u32 }
diff --git a/nod/src/io/wbfs.rs b/nod/src/io/wbfs.rs
index d5c7327..a9c31ac 100644
--- a/nod/src/io/wbfs.rs
+++ b/nod/src/io/wbfs.rs
@@ -97,7 +97,7 @@ impl BlockIO for DiscIOWBFS {
         &mut self,
         out: &mut [u8],
         block: u32,
-        _partition: Option<&PartitionInfo>,
+        partition: Option<&PartitionInfo>,
     ) -> io::Result<Block> {
         let block_size = self.header.block_size();
         if block >= self.header.max_blocks() {
@@ -120,7 +120,11 @@ impl BlockIO for DiscIOWBFS {
         let block_start = block_size as u64 * phys_block as u64;
         self.inner.seek(SeekFrom::Start(block_start))?;
         self.inner.read_exact(out)?;
-        Ok(Block::Raw)
+
+        match partition {
+            Some(partition) if partition.has_encryption => Ok(Block::PartEncrypted),
+            _ => Ok(Block::Raw),
+        }
     }
 
     fn block_size_internal(&self) -> u32 { self.header.block_size() }
diff --git a/nod/src/io/wia.rs b/nod/src/io/wia.rs
index f33eea0..0020afb 100644
--- a/nod/src/io/wia.rs
+++ b/nod/src/io/wia.rs
@@ -8,7 +8,7 @@ use zerocopy::{big_endian::*, FromBytes, Immutable, IntoBytes, KnownLayout};
 
 use crate::{
     disc::{
-        hashes::hash_bytes,
+        hashes::sha1_hash,
         wii::{HASHES_SIZE, SECTOR_DATA_SIZE},
         SECTOR_SIZE,
     },
@@ -530,7 +530,7 @@ impl Clone for DiscIOWIA {
 }
 
 fn verify_hash(buf: &[u8], expected: &HashBytes) -> Result<()> {
-    let out = hash_bytes(buf);
+    let out = sha1_hash(buf);
     if out != *expected {
         let mut got_bytes = [0u8; 40];
         let got = base16ct::lower::encode_str(&out, &mut got_bytes).unwrap(); // Safe: fixed buffer size
@@ -684,7 +684,10 @@ impl BlockIO for DiscIOWIA {
         let chunk_size = self.disc.chunk_size.get();
         let sectors_per_chunk = chunk_size / SECTOR_SIZE as u32;
 
-        let (group_index, group_sector, partition_offset) = if let Some(partition) = partition {
+        let in_partition = partition.is_some_and(|info| info.has_encryption);
+        let (group_index, group_sector, partition_offset) = if in_partition {
+            let partition = partition.unwrap();
+
             // Find the partition
             let Some(wia_part) = self.partitions.get(partition.index) else {
                 return Err(io::Error::new(
@@ -783,7 +786,7 @@ impl BlockIO for DiscIOWIA {
 
         // Read group data if necessary
         if group_index != self.group {
-            let group_data_size = if partition.is_some() {
+            let group_data_size = if in_partition {
                 // Within a partition, hashes are excluded from the data size
                 (sectors_per_chunk * SECTOR_DATA_SIZE as u32) as usize
             } else {
@@ -798,11 +801,8 @@ impl BlockIO for DiscIOWIA {
                 matches!(self.disc.compression(), WIACompression::None | WIACompression::Purge)
                     || !group.is_compressed();
             if uncompressed_exception_lists {
-                self.exception_lists = read_exception_lists(
-                    &mut reader,
-                    partition.is_some(),
-                    self.disc.chunk_size.get(),
-                )?;
+                self.exception_lists =
+                    read_exception_lists(&mut reader, in_partition, self.disc.chunk_size.get())?;
                 // Align to 4
                 let rem = reader.stream_position()? % 4;
                 if rem != 0 {
@@ -817,7 +817,7 @@ impl BlockIO for DiscIOWIA {
             if !uncompressed_exception_lists {
                 self.exception_lists = read_exception_lists(
                     reader.as_mut(),
-                    partition.is_some(),
+                    in_partition,
                     self.disc.chunk_size.get(),
                 )?;
             }
@@ -861,7 +861,7 @@ impl BlockIO for DiscIOWIA {
         }
 
         // Read sector from cached group data
-        if partition.is_some() {
+        if in_partition {
             let sector_data_start = group_sector as usize * SECTOR_DATA_SIZE;
             out[..HASHES_SIZE].fill(0);
             out[HASHES_SIZE..SECTOR_SIZE].copy_from_slice(
diff --git a/nod/src/lib.rs b/nod/src/lib.rs
index f895071..0a8f67f 100644
--- a/nod/src/lib.rs
+++ b/nod/src/lib.rs
@@ -46,8 +46,8 @@
 //! Converting a disc image to raw ISO:
 //!
 //! ```no_run
-//! // Enable `rebuild_encryption` to ensure the output is a valid ISO.
-//! let options = nod::OpenOptions { rebuild_encryption: true, ..Default::default() };
+//! // Enable `PartitionEncryptionMode::Original` to ensure the output is a valid ISO.
+//! let options = nod::OpenOptions { partition_encryption: nod::PartitionEncryptionMode::Original };
 //! let mut disc = nod::Disc::new_with_options("path/to/file.rvz", &options)
 //!     .expect("Failed to open disc");
 //!
@@ -64,9 +64,9 @@ use std::{
 };
 
 pub use disc::{
-    ApploaderHeader, DiscHeader, DolHeader, FileStream, Fst, Node, NodeKind, OwnedFileStream,
-    PartitionBase, PartitionHeader, PartitionKind, PartitionMeta, SignedHeader, Ticket,
-    TicketLimit, TmdHeader, WindowedStream, BI2_SIZE, BOOT_SIZE, DL_DVD_SIZE, GCN_MAGIC,
+    ApploaderHeader, ContentMetadata, DiscHeader, DolHeader, FileStream, Fst, Node, NodeKind,
+    OwnedFileStream, PartitionBase, PartitionHeader, PartitionKind, PartitionMeta, SignedHeader,
+    Ticket, TicketLimit, TmdHeader, WindowedStream, BI2_SIZE, BOOT_SIZE, DL_DVD_SIZE, GCN_MAGIC,
     MINI_DVD_SIZE, REGION_SIZE, SECTOR_SIZE, SL_DVD_SIZE, WII_MAGIC,
 };
 pub use io::{
@@ -150,13 +150,46 @@ where E: ErrorContext
     }
 }
 
+/// Wii partition encryption mode.
+#[derive(Debug, Clone, Copy, PartialEq, Eq, Default)]
+pub enum PartitionEncryptionMode {
+    /// Partition data is read as it's stored in the underlying disc format.
+    /// For example, WIA/RVZ partitions are stored decrypted, so this avoids
+    /// rebuilding the partition encryption and hash data if it will only be
+    /// read via [`PartitionBase`]. If it's desired to read a full disc image
+    /// via [`Disc`], use [`PartitionEncryptionMode::Original`] instead.
+    #[default]
+    AsIs,
+    /// Partition encryption and hashes are rebuilt to match its original state,
+    /// if necessary. This is used for converting or verifying a disc image.
+    Original,
+    /// Partition data will be encrypted if reading a decrypted disc image.
+    /// Modifies the disc header to mark partition data as encrypted.
+    ForceEncrypted,
+    /// Partition data will be decrypted if reading an encrypted disc image.
+    /// Modifies the disc header to mark partition data as decrypted.
+    ForceDecrypted,
+}
+
 /// Options for opening a disc image.
 #[derive(Default, Debug, Clone)]
 pub struct OpenOptions {
-    /// Wii: Rebuild partition data encryption and hashes if the underlying format stores data
-    /// decrypted or with hashes removed. (e.g. WIA/RVZ, NFS)
-    pub rebuild_encryption: bool,
-    /// Wii: Validate partition data hashes while reading the disc image.
+    /// Wii: Partition encryption mode. By default, partitions are read as they
+    /// are stored in the underlying disc format, avoiding extra work when the
+    /// underlying format stores them decrypted (e.g. WIA/RVZ).
+    ///
+    /// This can be changed to [`PartitionEncryptionMode::Original`] to rebuild
+    /// partition encryption and hashes to match its original state for conversion
+    /// or verification.
+    pub partition_encryption: PartitionEncryptionMode,
+}
+
+/// Options for opening a partition.
+#[derive(Default, Debug, Clone)]
+pub struct PartitionOptions {
+    /// Wii: Validate data hashes while reading the partition, if available.
+    /// To ensure hashes are present, regardless of the underlying disc format,
+    /// set [`OpenOptions::partition_encryption`] to [`PartitionEncryptionMode::Original`].
     pub validate_hashes: bool,
 }
 
@@ -165,7 +198,6 @@ pub struct OpenOptions {
 /// This is the primary entry point for reading disc images.
 pub struct Disc {
     reader: disc::reader::DiscReader,
-    options: OpenOptions,
 }
 
 impl Disc {
@@ -180,7 +212,7 @@ impl Disc {
     pub fn new_with_options<P: AsRef<Path>>(path: P, options: &OpenOptions) -> Result<Disc> {
         let io = io::block::open(path.as_ref())?;
         let reader = disc::reader::DiscReader::new(io, options)?;
-        Ok(Disc { reader, options: options.clone() })
+        Ok(Disc { reader })
     }
 
     /// Opens a disc image from a read stream.
@@ -197,7 +229,7 @@ impl Disc {
     ) -> Result<Disc> {
         let io = io::block::new(stream)?;
         let reader = disc::reader::DiscReader::new(io, options)?;
-        Ok(Disc { reader, options: options.clone() })
+        Ok(Disc { reader })
     }
 
     /// Detects the format of a disc image from a read stream.
@@ -236,7 +268,20 @@ impl Disc {
     /// **GameCube**: `index` must always be 0.
     #[inline]
     pub fn open_partition(&self, index: usize) -> Result<Box<dyn PartitionBase>> {
-        self.reader.open_partition(index, &self.options)
+        self.open_partition_with_options(index, &PartitionOptions::default())
+    }
+
+    /// Opens a decrypted partition read stream for the specified partition index
+    /// with custom options.
+    ///
+    /// **GameCube**: `index` must always be 0.
+    #[inline]
+    pub fn open_partition_with_options(
+        &self,
+        index: usize,
+        options: &PartitionOptions,
+    ) -> Result<Box<dyn PartitionBase>> {
+        self.reader.open_partition(index, options)
     }
 
     /// Opens a decrypted partition read stream for the first partition matching
@@ -245,7 +290,20 @@ impl Disc {
     /// **GameCube**: `kind` must always be [`PartitionKind::Data`].
     #[inline]
     pub fn open_partition_kind(&self, kind: PartitionKind) -> Result<Box<dyn PartitionBase>> {
-        self.reader.open_partition_kind(kind, &self.options)
+        self.reader.open_partition_kind(kind, &PartitionOptions::default())
+    }
+
+    /// Opens a decrypted partition read stream for the first partition matching
+    /// the specified kind with custom options.
+    ///
+    /// **GameCube**: `kind` must always be [`PartitionKind::Data`].
+    #[inline]
+    pub fn open_partition_kind_with_options(
+        &self,
+        kind: PartitionKind,
+        options: &PartitionOptions,
+    ) -> Result<Box<dyn PartitionBase>> {
+        self.reader.open_partition_kind(kind, options)
     }
 }
 
diff --git a/nodtool/Cargo.toml b/nodtool/Cargo.toml
index bae1f61..6764958 100644
--- a/nodtool/Cargo.toml
+++ b/nodtool/Cargo.toml
@@ -30,7 +30,7 @@ indicatif = "0.17"
 itertools = "0.13"
 log = "0.4"
 md-5 = "0.10"
-nod = { version = "1.2", path = "../nod" }
+nod = { version = "2.0.0-alpha", path = "../nod" }
 quick-xml = { version = "0.36", features = ["serialize"] }
 serde = { version = "1.0", features = ["derive"] }
 sha1 = "0.10"
diff --git a/nodtool/src/cmd/convert.rs b/nodtool/src/cmd/convert.rs
index 991a03a..8af1e42 100644
--- a/nodtool/src/cmd/convert.rs
+++ b/nodtool/src/cmd/convert.rs
@@ -1,6 +1,7 @@
 use std::path::PathBuf;
 
 use argp::FromArgs;
+use nod::OpenOptions;
 
 use crate::util::{redump, shared::convert_and_verify};
 
@@ -20,6 +21,12 @@ pub struct Args {
     #[argp(option, short = 'd')]
     /// path to DAT file(s) for verification (optional)
     dat: Vec<PathBuf>,
+    #[argp(switch)]
+    /// decrypt Wii partition data
+    decrypt: bool,
+    #[argp(switch)]
+    /// encrypt Wii partition data
+    encrypt: bool,
 }
 
 pub fn run(args: Args) -> nod::Result<()> {
@@ -27,5 +34,15 @@ pub fn run(args: Args) -> nod::Result<()> {
         println!("Loading dat files...");
         redump::load_dats(args.dat.iter().map(PathBuf::as_ref))?;
     }
-    convert_and_verify(&args.file, Some(&args.out), args.md5)
+    let options = OpenOptions {
+        partition_encryption: match (args.decrypt, args.encrypt) {
+            (true, false) => nod::PartitionEncryptionMode::ForceDecrypted,
+            (false, true) => nod::PartitionEncryptionMode::ForceEncrypted,
+            (false, false) => nod::PartitionEncryptionMode::Original,
+            (true, true) => {
+                return Err(nod::Error::Other("Both --decrypt and --encrypt specified".to_string()))
+            }
+        },
+    };
+    convert_and_verify(&args.file, Some(&args.out), args.md5, &options)
 }
diff --git a/nodtool/src/cmd/dat.rs b/nodtool/src/cmd/dat.rs
index fae8ef4..c306050 100644
--- a/nodtool/src/cmd/dat.rs
+++ b/nodtool/src/cmd/dat.rs
@@ -10,7 +10,7 @@ use std::{
 
 use argp::FromArgs;
 use indicatif::{ProgressBar, ProgressState, ProgressStyle};
-use nod::{Disc, OpenOptions, Result, ResultContext};
+use nod::{Disc, OpenOptions, PartitionEncryptionMode, Result, ResultContext};
 use zerocopy::FromZeros;
 
 use crate::util::{
@@ -165,10 +165,8 @@ struct DiscHashes {
 }
 
 fn load_disc(path: &Path, name: &str, full_verify: bool) -> Result<DiscHashes> {
-    let mut disc = Disc::new_with_options(path, &OpenOptions {
-        rebuild_encryption: true,
-        validate_hashes: false,
-    })?;
+    let options = OpenOptions { partition_encryption: PartitionEncryptionMode::Original };
+    let mut disc = Disc::new_with_options(path, &options)?;
     let disc_size = disc.disc_size();
     if !full_verify {
         let meta = disc.meta();
diff --git a/nodtool/src/cmd/extract.rs b/nodtool/src/cmd/extract.rs
index fdeb131..02be1a6 100644
--- a/nodtool/src/cmd/extract.rs
+++ b/nodtool/src/cmd/extract.rs
@@ -9,7 +9,8 @@ use std::{
 use argp::FromArgs;
 use itertools::Itertools;
 use nod::{
-    Disc, Fst, Node, OpenOptions, PartitionBase, PartitionKind, PartitionMeta, ResultContext,
+    Disc, Fst, Node, OpenOptions, PartitionBase, PartitionKind, PartitionMeta, PartitionOptions,
+    ResultContext,
 };
 use size::{Base, Size};
 use zerocopy::IntoBytes;
@@ -52,36 +53,39 @@ pub fn run(args: Args) -> nod::Result<()> {
     } else {
         output_dir = args.file.with_extension("");
     }
-    let disc = Disc::new_with_options(&args.file, &OpenOptions {
-        rebuild_encryption: false,
-        validate_hashes: args.validate,
-    })?;
+    let disc = Disc::new_with_options(&args.file, &OpenOptions::default())?;
     let header = disc.header();
     let is_wii = header.is_wii();
+    let partition_options = PartitionOptions { validate_hashes: args.validate };
     if let Some(partition) = args.partition {
         if partition.eq_ignore_ascii_case("all") {
             for info in disc.partitions() {
                 let mut out_dir = output_dir.clone();
                 out_dir.push(info.kind.dir_name().as_ref());
-                let mut partition = disc.open_partition(info.index)?;
+                let mut partition =
+                    disc.open_partition_with_options(info.index, &partition_options)?;
                 extract_partition(&disc, partition.as_mut(), &out_dir, is_wii, args.quiet)?;
             }
         } else if partition.eq_ignore_ascii_case("data") {
-            let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
+            let mut partition =
+                disc.open_partition_kind_with_options(PartitionKind::Data, &partition_options)?;
             extract_partition(&disc, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
         } else if partition.eq_ignore_ascii_case("update") {
-            let mut partition = disc.open_partition_kind(PartitionKind::Update)?;
+            let mut partition =
+                disc.open_partition_kind_with_options(PartitionKind::Update, &partition_options)?;
             extract_partition(&disc, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
         } else if partition.eq_ignore_ascii_case("channel") {
-            let mut partition = disc.open_partition_kind(PartitionKind::Channel)?;
+            let mut partition =
+                disc.open_partition_kind_with_options(PartitionKind::Channel, &partition_options)?;
             extract_partition(&disc, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
         } else {
             let idx = partition.parse::<usize>().map_err(|_| "Invalid partition index")?;
-            let mut partition = disc.open_partition(idx)?;
+            let mut partition = disc.open_partition_with_options(idx, &partition_options)?;
             extract_partition(&disc, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
         }
     } else {
-        let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
+        let mut partition =
+            disc.open_partition_kind_with_options(PartitionKind::Data, &partition_options)?;
         extract_partition(&disc, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
     }
     Ok(())
diff --git a/nodtool/src/cmd/info.rs b/nodtool/src/cmd/info.rs
index ee08784..16c2d95 100644
--- a/nodtool/src/cmd/info.rs
+++ b/nodtool/src/cmd/info.rs
@@ -1,7 +1,7 @@
 use std::path::{Path, PathBuf};
 
 use argp::FromArgs;
-use nod::{Disc, OpenOptions, SECTOR_SIZE};
+use nod::{Disc, SECTOR_SIZE};
 use size::Size;
 
 use crate::util::{display, shared::print_header};
@@ -24,16 +24,16 @@ pub fn run(args: Args) -> nod::Result<()> {
 
 fn info_file(path: &Path) -> nod::Result<()> {
     log::info!("Loading {}", display(path));
-    let disc = Disc::new_with_options(path, &OpenOptions {
-        rebuild_encryption: false,
-        validate_hashes: false,
-    })?;
+    let disc = Disc::new(path)?;
     let header = disc.header();
     let meta = disc.meta();
     print_header(header, &meta);
 
     if header.is_wii() {
         for (idx, info) in disc.partitions().iter().enumerate() {
+            let mut partition = disc.open_partition(idx)?;
+            let meta = partition.meta()?;
+
             println!();
             println!("Partition {}", idx);
             println!("\tType: {}", info.kind);
@@ -41,43 +41,50 @@ fn info_file(path: &Path) -> nod::Result<()> {
             println!("\tStart sector: {} (offset {:#X})", info.start_sector, offset);
             let data_size =
                 (info.data_end_sector - info.data_start_sector) as u64 * SECTOR_SIZE as u64;
+            if info.has_encryption {
+                println!(
+                    "\tEncrypted data offset / size: {:#X} / {:#X} ({})",
+                    info.data_start_sector as u64 * SECTOR_SIZE as u64,
+                    data_size,
+                    Size::from_bytes(data_size)
+                );
+            } else {
+                println!(
+                    "\tDecrypted data offset / size: {:#X} / {:#X} ({})",
+                    offset,
+                    data_size,
+                    Size::from_bytes(data_size)
+                );
+            }
             println!(
-                "\tData offset / size: {:#X} / {:#X} ({})",
-                info.data_start_sector as u64 * SECTOR_SIZE as u64,
-                data_size,
-                Size::from_bytes(data_size)
-            );
-            println!(
-                "\tTMD  offset / size: {:#X} / {:#X}",
+                "\tTMD offset / size: {:#X} / {:#X}",
                 offset + info.header.tmd_off(),
                 info.header.tmd_size()
             );
+            if let Some(content_metadata) = meta.content_metadata() {
+                for content in content_metadata {
+                    println!(
+                        "\t-> Content {:08X} size: {:#X} ({})",
+                        content.content_index.get(),
+                        content.size.get(),
+                        Size::from_bytes(content.size.get()),
+                    );
+                }
+            }
             println!(
-                "\tCert offset / size: {:#X} / {:#X}",
+                "\tCert chain offset / size: {:#X} / {:#X}",
                 offset + info.header.cert_chain_off(),
                 info.header.cert_chain_size()
             );
             println!(
-                "\tH3   offset / size: {:#X} / {:#X}",
+                "\tH3 table offset / size: {:#X} / {:#X}",
                 offset + info.header.h3_table_off(),
                 info.header.h3_table_size()
             );
 
-            let mut partition = disc.open_partition(idx)?;
-            let meta = partition.meta()?;
             let tmd = meta.tmd_header();
             let title_id_str = if let Some(tmd) = tmd {
-                format!(
-                    "{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}{:02x}",
-                    tmd.title_id[0],
-                    tmd.title_id[1],
-                    tmd.title_id[2],
-                    tmd.title_id[3],
-                    tmd.title_id[4],
-                    tmd.title_id[5],
-                    tmd.title_id[6],
-                    tmd.title_id[7]
-                )
+                hex::encode_upper(tmd.title_id)
             } else {
                 "N/A".to_string()
             };
diff --git a/nodtool/src/cmd/verify.rs b/nodtool/src/cmd/verify.rs
index c1e35bc..c70086d 100644
--- a/nodtool/src/cmd/verify.rs
+++ b/nodtool/src/cmd/verify.rs
@@ -1,6 +1,7 @@
 use std::path::PathBuf;
 
 use argp::FromArgs;
+use nod::{OpenOptions, PartitionEncryptionMode};
 
 use crate::util::{redump, shared::convert_and_verify};
 
@@ -24,8 +25,9 @@ pub fn run(args: Args) -> nod::Result<()> {
         println!("Loading dat files...");
         redump::load_dats(args.dat.iter().map(PathBuf::as_ref))?;
     }
+    let options = OpenOptions { partition_encryption: PartitionEncryptionMode::Original };
     for file in &args.file {
-        convert_and_verify(file, None, args.md5)?;
+        convert_and_verify(file, None, args.md5, &options)?;
         println!();
     }
     Ok(())
diff --git a/nodtool/src/util/shared.rs b/nodtool/src/util/shared.rs
index 52fde42..8758763 100644
--- a/nodtool/src/util/shared.rs
+++ b/nodtool/src/util/shared.rs
@@ -38,20 +38,22 @@ pub fn print_header(header: &DiscHeader, meta: &DiscMeta) {
     println!("Title: {}", header.game_title_str());
     println!("Game ID: {}", header.game_id_str());
     println!("Disc {}, Revision {}", header.disc_num + 1, header.disc_version);
-    if header.no_partition_hashes != 0 {
+    if !header.has_partition_hashes() {
         println!("[!] Disc has no hashes");
     }
-    if header.no_partition_encryption != 0 {
+    if !header.has_partition_encryption() {
         println!("[!] Disc is not encrypted");
     }
 }
 
-pub fn convert_and_verify(in_file: &Path, out_file: Option<&Path>, md5: bool) -> Result<()> {
+pub fn convert_and_verify(
+    in_file: &Path,
+    out_file: Option<&Path>,
+    md5: bool,
+    options: &OpenOptions,
+) -> Result<()> {
     println!("Loading {}", display(in_file));
-    let mut disc = Disc::new_with_options(in_file, &OpenOptions {
-        rebuild_encryption: true,
-        validate_hashes: false,
-    })?;
+    let mut disc = Disc::new_with_options(in_file, options)?;
     let header = disc.header();
     let meta = disc.meta();
     print_header(header, &meta);