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gc_fst

This library/binary extracts and rebuilds Gamecube ISO filesystems.

This is almost equivalent to the functionality given by GCRebuilder and gcmod. It has much better error messages than either program, fewer bugs, and will work on linux, Windows, and probably OSX.

The fs command will attempt to modify the iso with as little io work as possible. You can pass as many subcommands as you want at a time. If the inserted file does not exist, then it will be created, along with any needed subdirectories. The special files "ISO.hdr", "AppLoader.ldr", and "Start.dol" can be inserted and will replace the existing special file in the ISO, and will not be inserted into the iso filesystem.

Usage: gc_fst extract <iso path>
       gc_fst rebuild <root path> [iso path]
       gc_fst get-header <ISO.hdr path | iso path>
       gc_fst set-header <ISO.hdr path | iso path> <game ID> [game title]
       gc_fst read <iso path> [ <path in iso> <path to file> ] * n
       gc_fst tree <iso path> [--size|-s] [--offset|-o] [--hex|-x] [--directories|-d] [--filename|-f]
       gc_fst fs <iso path> [
           insert <path in iso> <path to file>
           delete <path in iso>
       ] * n

Limitations

The gc_fst binary does not support editing metadata (banner image, game name, description, etc.) contained in opening.bnr. You can, however, use the library to create a new opening.bnr file. See how in this example.

Note that gc_fst will always reconstruct the table of contents when rebuilding the iso. Likewise, it will not emit a Game.toc file when extracting.