U8 (File Format)
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U8 is an archive format containing a hierarchical file system.
File Format
Header
The file starts with the following header:
| Offset | Type | Description |
|---|---|---|
| 0x00 | UInt32 | File magic. Always U.8-. |
| 0x04 | UInt32 | Root file entry offset. |
| 0x08 | UInt32 | Size of node table and string table in bytes. |
| 0x0C | UInt32 | File data start offset. |
| 0x10 | UInt32[4] | Reserved. Filled with 0xCC. |
File Entry
Each file entry has the following structure:
| Offset | Type | Description |
|---|---|---|
| 0x00 | Byte | Entry type. File = 0, Directory = 1. |
| 0x01 | UInt24 | File entry name offset, relative to the start of the string table. |
| 0x04 | UInt32 | File: File data offset. Directory: Parent file entry index. |
| 0x08 | UInt32 | File: File data size in bytes. Directory: Index of the first file entry that is not part of this directory. |
String Table
After all nodes comes all strings. It consists of null-terminated strings which are folder and file names.
Tools
The following tools can handle U8 files:
- CTools Pack, by MrBean35000vr and Chadderz
- Every File Explorer, by Gericom
- SZS Modifier, by MrBean35000vr and Chadderz
- Wexos's Toolbox, by Wexos
- Wiimms SZS Tools, by Wiimm
