GCubeSDK
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Disc Image

A DOL alone can only load embedded files, which is fine for smaller projects. But if you plan a bigger project than you need a disc image where you can store external files. GCubeSDK can create .iso / .gcm images that accurate emulators or a real GameCube can mount. The editor GCM Disc tab and make iso build that image for you. But you have to set the Sys files first.

File System Tree

The dolphin emulator can inspect the Filesystem Tree to inspect the disc image:

DiscFST

You can also see the current Filesystem Tree inside GCubeSDK after you build the disc image. You cannot add files into that list. Switch to the Resources Tab and put the files in there and build again.

DiscFST2

System files

GCubeSDK does not ship these files. You need to obtain them when you build an ISO.

  • apploader.img
  • fst.bin
  • bi2.bin
  • boot.bin

Obtain the four files from a GameCube disc that you own. Do not download them from a website.

DiscSys

Nodtool

NOD is a library and utility for traversing, dumping, and authoring GameCube and Wii optical disc images. GCubeSDK is using Nodtool to create .iso / .gcm images. You can also use nodtool by hand to unpack a disc image you made from a disc you own:

nodtool extract ./disc.iso outDir

Open outDir/sys and copy apploader.img, fst.bin, bi2.bin, and boot.bin.

Dolphin

Dolphin is the suggested emulator. It can dump a GameCube disc that you own by simply rightclicking on the filesystem tree.

DiscExtractSys

The banner is the picture and text on the GameCube IPL (Initial Program Loader) and in the Dolphin game list.

Disc banner

The source picture is banner.ppm defined in config.ini from BANNER_PATH. It must be 96×32 in size. Use the editor, GCM Disc > Edit Banner to make custom changes.

DiscEditBanner