diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 54db1a8..9e1f511 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -19,7 +19,7 @@ jobs:
       RUSTFLAGS: -D warnings
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@master
         with:
@@ -37,7 +37,7 @@ jobs:
       RUSTFLAGS: -D warnings
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust toolchain
         # We use nightly options in rustfmt.toml
         uses: dtolnay/rust-toolchain@nightly
@@ -58,7 +58,7 @@ jobs:
     # Prevent new advisories from failing CI
     continue-on-error: ${{ matrix.checks == 'advisories' }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: EmbarkStudios/cargo-deny-action@v1
         with:
           command: check ${{ matrix.checks }}
@@ -72,7 +72,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Setup Rust toolchain
         uses: dtolnay/rust-toolchain@stable
       - name: Cargo test
@@ -127,7 +127,7 @@ jobs:
     runs-on: ${{ matrix.platform }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install dependencies
         if: matrix.packages != ''
         run: |
@@ -143,7 +143,7 @@ jobs:
       - name: Cargo build
         run: cargo ${{ matrix.build }} --profile ${{ env.BUILD_PROFILE }} --target ${{ matrix.target }} --bin ${{ env.CARGO_BIN_NAME }} --features ${{ matrix.features }}
       - name: Upload artifacts
-        uses: actions/upload-artifact@v3
+        uses: actions/upload-artifact@v4
         with:
           name: ${{ matrix.name }}
           path: |
@@ -160,7 +160,7 @@ jobs:
     needs: [ build ]
     steps:
       - name: Download artifacts
-        uses: actions/download-artifact@v3
+        uses: actions/download-artifact@v4
         with:
           path: artifacts
       - name: Rename artifacts
@@ -172,6 +172,6 @@ jobs:
           done
           ls -R ../out
       - name: Release
-        uses: softprops/action-gh-release@v1
+        uses: softprops/action-gh-release@4634c16e79c963813287e889244c50009e7f0981
         with:
           files: out/*
diff --git a/Cargo.lock b/Cargo.lock
index 072f148..ed2577c 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -411,7 +411,7 @@ dependencies = [
 
 [[package]]
 name = "nod"
-version = "0.2.0"
+version = "1.0.0"
 dependencies = [
  "adler",
  "aes",
@@ -434,7 +434,7 @@ dependencies = [
 
 [[package]]
 name = "nodtool"
-version = "0.2.0"
+version = "1.0.0"
 dependencies = [
  "argp",
  "base16ct",
diff --git a/nod/Cargo.toml b/nod/Cargo.toml
index 431f5b3..71e22c8 100644
--- a/nod/Cargo.toml
+++ b/nod/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "nod"
-version = "0.2.0"
+version = "1.0.0"
 edition = "2021"
 rust-version = "1.73.0"
 authors = ["Luke Street <luke@street.dev>"]
@@ -23,20 +23,20 @@ compress-zlib = ["adler", "miniz_oxide"]
 compress-zstd = ["zstd"]
 
 [dependencies]
-adler = { version = "1.0.2", optional = true }
-aes = "0.8.4"
-base16ct = "0.2.0"
-bzip2 = { version = "0.4.4", features = ["static"], optional = true }
-cbc = "0.1.2"
-digest = "0.10.7"
-dyn-clone = "1.0.16"
-encoding_rs = "0.8.33"
-itertools = "0.12.1"
-liblzma = { version = "0.2.3", features = ["static"], optional = true }
-log = "0.4.20"
-miniz_oxide = { version = "0.7.2", optional = true }
-rayon = "1.8.1"
-sha1 = "0.10.6"
-thiserror = "1.0.57"
-zerocopy = { version = "0.7.32", features = ["alloc", "derive"] }
-zstd = { version = "0.13.0", optional = true }
+adler = { version = "1.0", optional = true }
+aes = "0.8"
+base16ct = "0.2"
+bzip2 = { version = "0.4", features = ["static"], optional = true }
+cbc = "0.1"
+digest = "0.10"
+dyn-clone = "1.0"
+encoding_rs = "0.8"
+itertools = "0.12"
+liblzma = { version = "0.2", features = ["static"], optional = true }
+log = "0.4"
+miniz_oxide = { version = "0.7", optional = true }
+rayon = "1.8"
+sha1 = "0.10"
+thiserror = "1.0"
+zerocopy = { version = "0.7", features = ["alloc", "derive"] }
+zstd = { version = "0.13", optional = true }
diff --git a/nod/src/disc/gcn.rs b/nod/src/disc/gcn.rs
index cbc3efd..f718a8f 100644
--- a/nod/src/disc/gcn.rs
+++ b/nod/src/disc/gcn.rs
@@ -118,7 +118,7 @@ impl PartitionBase for PartitionGC {
 
     fn open_file(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
         assert_eq!(node.kind(), NodeKind::File);
-        self.new_window(node.offset(false), node.length(false))
+        self.new_window(node.offset(false), node.length())
     }
 
     fn ideal_buffer_size(&self) -> usize { SECTOR_SIZE }
diff --git a/nod/src/disc/wii.rs b/nod/src/disc/wii.rs
index 56354f7..443d47d 100644
--- a/nod/src/disc/wii.rs
+++ b/nod/src/disc/wii.rs
@@ -437,7 +437,7 @@ impl PartitionBase for PartitionWii {
 
     fn open_file(&mut self, node: &Node) -> io::Result<SharedWindowedReadStream> {
         assert_eq!(node.kind(), NodeKind::File);
-        self.new_window(node.offset(true), node.length(true))
+        self.new_window(node.offset(true), node.length())
     }
 
     fn ideal_buffer_size(&self) -> usize { SECTOR_DATA_SIZE }
diff --git a/nod/src/fst.rs b/nod/src/fst.rs
index 8f2a474..5568fa9 100644
--- a/nod/src/fst.rs
+++ b/nod/src/fst.rs
@@ -63,18 +63,12 @@ impl Node {
         }
     }
 
-    /// For files, this is the byte size of the file. (Wii: >> 2)
+    /// For files, this is the byte size of the file.
     ///
     /// For directories, this is the child end index in the FST.
     ///
     /// Number of child files and directories recursively is `length - offset`.
-    pub fn length(&self, is_wii: bool) -> u64 {
-        if is_wii && self.kind == 0 {
-            self.length.get() as u64 * 4
-        } else {
-            self.length.get() as u64
-        }
-    }
+    pub fn length(&self) -> u64 { self.length.get() as u64 }
 }
 
 /// A view into the file system tree (FST).
@@ -90,7 +84,7 @@ impl<'a> Fst<'a> {
             return Err("FST root node not found");
         };
         // String table starts after the last node
-        let string_base = root_node.length(false) * size_of::<Node>() as u64;
+        let string_base = root_node.length() * size_of::<Node>() as u64;
         if string_base >= buf.len() as u64 {
             return Err("FST string table out of bounds");
         }
@@ -137,10 +131,10 @@ impl<'a> Fst<'a> {
                 }
                 // Descend into directory
                 idx += 1;
-                stop_at = Some(node.length(false) as usize + idx);
+                stop_at = Some(node.length() as usize + idx);
             } else if node.is_dir() {
                 // Skip directory
-                idx = node.length(false) as usize;
+                idx = node.length() as usize;
             } else {
                 // Skip file
                 idx += 1;
diff --git a/nod/src/io/ciso.rs b/nod/src/io/ciso.rs
index 3a089bf..9ec8119 100644
--- a/nod/src/io/ciso.rs
+++ b/nod/src/io/ciso.rs
@@ -102,7 +102,7 @@ impl BlockIO for DiscIOCISO {
         let phys_block = self.block_map[block as usize];
         if phys_block == u16::MAX {
             // Check if block is junk data
-            if self.nkit_header.as_ref().is_some_and(|h| h.is_junk_block(block).unwrap_or(false)) {
+            if self.nkit_header.as_ref().and_then(|h| h.is_junk_block(block)).unwrap_or(false) {
                 return Ok(Block::Junk);
             };
 
diff --git a/nod/src/io/wbfs.rs b/nod/src/io/wbfs.rs
index 8981649..0411cf8 100644
--- a/nod/src/io/wbfs.rs
+++ b/nod/src/io/wbfs.rs
@@ -59,7 +59,7 @@ pub struct DiscIOWBFS {
     /// WBFS header
     header: WBFSHeader,
     /// Map of Wii LBAs to WBFS LBAs
-    block_table: Box<[U16]>,
+    block_map: Box<[U16]>,
     /// Optional NKit header
     nkit_header: Option<NKitHeader>,
 }
@@ -91,11 +91,11 @@ impl DiscIOWBFS {
             return Err(Error::DiscFormat("Only single WBFS discs are supported".to_string()));
         }
 
-        // Read WBFS LBA table
+        // Read WBFS LBA map
         inner
             .seek(SeekFrom::Start(header.sector_size() as u64 + DISC_HEADER_SIZE as u64))
             .context("Seeking to WBFS LBA table")?; // Skip header
-        let block_table: Box<[U16]> = read_box_slice(&mut inner, header.max_blocks() as usize)
+        let block_map: Box<[U16]> = read_box_slice(&mut inner, header.max_blocks() as usize)
             .context("Reading WBFS LBA table")?;
 
         // Read NKit header if present (always at 0x10000)
@@ -104,7 +104,7 @@ impl DiscIOWBFS {
 
         // Reset reader
         inner.reset();
-        Ok(Box::new(Self { inner, header, block_table, nkit_header }))
+        Ok(Box::new(Self { inner, header, block_map, nkit_header }))
     }
 }
 
@@ -120,16 +120,20 @@ impl BlockIO for DiscIOWBFS {
             return Ok(Block::Zero);
         }
 
-        // Check if block is junk data
-        if self.nkit_header.as_ref().and_then(|h| h.is_junk_block(block)).unwrap_or(false) {
-            return Ok(Block::Junk);
+        // Find the block in the map
+        let phys_block = self.block_map[block as usize].get();
+        if phys_block == 0 {
+            // Check if block is junk data
+            if self.nkit_header.as_ref().and_then(|h| h.is_junk_block(block)).unwrap_or(false) {
+                return Ok(Block::Junk);
+            }
+
+            // Otherwise, read zeroes
+            return Ok(Block::Zero);
         }
 
         // Read block
-        let block_start = block_size as u64 * self.block_table[block as usize].get() as u64;
-        if block_start == 0 {
-            return Ok(Block::Zero);
-        }
+        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)
diff --git a/nodtool/Cargo.toml b/nodtool/Cargo.toml
index 50c8d8c..4ad54f7 100644
--- a/nodtool/Cargo.toml
+++ b/nodtool/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "nodtool"
-version = "0.2.0"
+version = "1.0.0"
 edition = "2021"
 rust-version = "1.73.0"
 authors = ["Luke Street <luke@street.dev>"]
diff --git a/nodtool/src/main.rs b/nodtool/src/main.rs
index c2a6393..e323355 100644
--- a/nodtool/src/main.rs
+++ b/nodtool/src/main.rs
@@ -31,7 +31,7 @@ use size::{Base, Size};
 use supports_color::Stream;
 use tracing::level_filters::LevelFilter;
 use tracing_subscriber::EnvFilter;
-use zerocopy::FromZeroes;
+use zerocopy::{AsBytes, FromZeroes};
 
 #[derive(FromArgs, Debug)]
 /// Tool for reading GameCube and Wii disc images.
@@ -543,44 +543,46 @@ fn extract(args: ExtractArgs) -> Result<()> {
         rebuild_encryption: false,
         validate_hashes: args.validate,
     })?;
-    let is_wii = disc.header().is_wii();
+    let header = disc.header();
+    let is_wii = header.is_wii();
     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)?;
-                extract_partition(partition.as_mut(), &out_dir, is_wii, args.quiet)?;
+                extract_partition(header, 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)?;
-            extract_partition(partition.as_mut(), &output_dir, is_wii, args.quiet)?;
+            extract_partition(header, 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)?;
-            extract_partition(partition.as_mut(), &output_dir, is_wii, args.quiet)?;
+            extract_partition(header, 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)?;
-            extract_partition(partition.as_mut(), &output_dir, is_wii, args.quiet)?;
+            extract_partition(header, 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)?;
-            extract_partition(partition.as_mut(), &output_dir, is_wii, args.quiet)?;
+            extract_partition(header, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
         }
     } else {
         let mut partition = disc.open_partition_kind(PartitionKind::Data)?;
-        extract_partition(partition.as_mut(), &output_dir, is_wii, args.quiet)?;
+        extract_partition(header, partition.as_mut(), &output_dir, is_wii, args.quiet)?;
     }
     Ok(())
 }
 
 fn extract_partition(
+    header: &DiscHeader,
     partition: &mut dyn PartitionBase,
     out_dir: &Path,
     is_wii: bool,
     quiet: bool,
 ) -> Result<()> {
     let meta = partition.meta()?;
-    extract_sys_files(meta.as_ref(), out_dir, quiet)?;
+    extract_sys_files(header, meta.as_ref(), out_dir, quiet)?;
 
     // Extract FST
     let files_dir = out_dir.join("files");
@@ -601,7 +603,7 @@ fn extract_partition(
         path_segments.truncate(new_size);
 
         // Add the new path segment
-        let end = if node.is_dir() { node.length(false) as usize } else { idx + 1 };
+        let end = if node.is_dir() { node.length() as usize } else { idx + 1 };
         path_segments.push((name?, end));
 
         let path = path_segments.iter().map(|(name, _)| name.as_ref()).join("/");
@@ -615,7 +617,12 @@ fn extract_partition(
     Ok(())
 }
 
-fn extract_sys_files(data: &PartitionMeta, out_dir: &Path, quiet: bool) -> Result<()> {
+fn extract_sys_files(
+    header: &DiscHeader,
+    data: &PartitionMeta,
+    out_dir: &Path,
+    quiet: bool,
+) -> Result<()> {
     let sys_dir = out_dir.join("sys");
     fs::create_dir_all(&sys_dir)
         .with_context(|| format!("Creating directory {}", display(&sys_dir)))?;
@@ -626,6 +633,12 @@ fn extract_sys_files(data: &PartitionMeta, out_dir: &Path, quiet: bool) -> Resul
     extract_file(data.raw_dol.as_ref(), &sys_dir.join("main.dol"), quiet)?;
 
     // Wii files
+    if header.is_wii() {
+        let disc_dir = out_dir.join("disc");
+        fs::create_dir_all(&disc_dir)
+            .with_context(|| format!("Creating directory {}", display(&disc_dir)))?;
+        extract_file(&header.as_bytes()[..0x100], &disc_dir.join("header.bin"), quiet)?;
+    }
     if let Some(ticket) = data.raw_ticket.as_deref() {
         extract_file(ticket, &out_dir.join("ticket.bin"), quiet)?;
     }
@@ -666,7 +679,7 @@ fn extract_node(
         println!(
             "Extracting {} (size: {})",
             display(&file_path),
-            Size::from_bytes(node.length(is_wii)).format().with_base(Base::Base10)
+            Size::from_bytes(node.length()).format().with_base(Base::Base10)
         );
     }
     let file = File::create(&file_path)
@@ -677,7 +690,7 @@ fn extract_node(
             "Opening file {} on disc for reading (offset {}, size {})",
             name,
             node.offset(is_wii),
-            node.length(is_wii)
+            node.length()
         )
     })?;
     io::copy(&mut r, &mut w).with_context(|| format!("Extracting file {}", display(&file_path)))?;