The purpose of this tool is to make it easier to extract and build GCM discs with command line tools. Although GCM discs technically should always be a fixed size, this program as it stands will leave as little free space as possible. This means re-built discs can be anywhere from 200MB to the full 1.4GB.
To extract all the files from the disc into a directory:
extract disc.gcm output/directory/path
To build a disc you must pass in a directory that has had the contents of the disc extracted to it previously. If it detects missing files or improper structure it will not build anything.
build previously/extracted/directory output.gcm
Files will simply list the contents of the disc to the console.
files disc.gcm
For convinience there are single letter aliases for all the commands.
| Command | Alias |
|---|---|
| extract | e |
| build | b |
| files | f |