How to Convert N64 to GCM

By Justin Walsh

A .GCM file is a digital image of a Nintendo GameCube game. It's often used in collaboration with an emulator to recreate the experience of playing the console on a different medium, usually a computer. A .N64 file is a digital image of a Nintendo 64 game, and is used for the same purpose. As video games are most often read-only memory -- or ROM -- both .GCM and .N64 are types of ROM images. Converting a .N64 ROM into a .GCM ROM allows a user to play a Nintendo 64 game on a GameCube emulator. There are three methods to convert a .N64 ROM into a .GCM ROM.

Paradox GC-Tool Method

Step 1

Download or obtain the .N64 file you would like to convert.

Step 2

Download or obtain a .GCM digital image of "Zelda: Ocarina of Time" for the GameCube.

Step 3

Download and install Paradox GC-Tool. Open the program.

Step 4

Click “File” and then click “Open GC-Iso.” Select the "Zelda: Ocarina of Time" .GCM file and then click “Open.”

Step 5

Replace the file “Zelda2p.n64” with the .N64 file you would like to convert. You will be prompted to change the file size. Ignore this prompt by clicking “No.”

Step 6

Use a GameCube emulator to boot the newly altered "Zelda: Ocarina of Time" .GCM file, which has now been injected with the .N64 file you selected. This allows you to play the N64 game on the GameCube emulator.

Cubesoft Phoenix Method

Step 1

Download or obtain the .N64 file you would like to convert.

Step 2

Download and install Cubesoft Phoenix. Open the program.

Step 3

Click on the “Loaders” tab. Select “Load a Nintendo 64 ROM file.”

Step 4

Under “Image Loading,” click on the button marked “…” and then select the .N64 file you would like to convert. Click “Open.”

Step 5

Under “Image Loading,” click on the button marked “Load.” Cubesoft Phoenix has a built-in N64 loader function. As a result, your .N64 file will boot successfully, despite being played on software designed for the GameCube.

GCM N64 ROMS Injector Method

Step 1

Download or obtain the .N64 file you would like to convert. Download or obtain a .GCM digital image of "Zelda: Ocarina of Time" for the GameCube.

Step 2

Download and install GCM N64 ROMS Injector. Open the program.

Step 3

Click on the button with the picture of a folder on it, under the section “Experience GCM Image Emulator V2.0.” Select the "Zelda: Ocarina of Time" .GCM file, and click “Open.”

Step 4

Click on the button with the picture of a folder on it, under the section “ROM to Inject.” Select the .N64 file you would like to convert, and click “Open.”

Step 5

Click “Inject.” Use a GameCube emulator to boot the newly altered "Zelda: Ocarina of Time" .GCM file, which has now been injected with the .N64 file you selected. This allows you to play the N64 game on the GameCube emulator.

Tips & Warnings

  • If you select the solution outlined in Section 1 or 3, you must use a .GCM image file of the "Zelda: Ocarina of Time" that was ported for GameCube by Nintendo. It was included as a bonus disc for those who pre-ordered "Zelda: Wind Waker."