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cMIOS

Just like Wii games use IOS to launch, the GameCube games use the MIOS instead. This is a special kind of IOS which loads only GameCube games.

If we want to enable GameCube backup support, we will thus need to install a cMIOS.

If you use this method, you can not use DIOS-MIOS or DIOS-MIOS Lite.


This does not work on newer Wii models!
If your Wii is not White or not old enough, it will not read backup discs!


Required
  • An SD card (Best results are with non-SDHC cards, SDHC will only work on 4.0 or above) or USB device formatted to FAT(32).
  • D2X (or another) cIOS must be installed (See here)
  • NUS Downloader

Links

Result
  • Allows you to run GameCube backups through any Disc Backup Launcher (or Disc channel if your system menu IOS is patched)

Guide


Computer ----------------------


1. Run the NUS Downloader. Enable Pack Wad.
  • In NUS go to Database -> System > MIOS > v10
  • Open the location where you extracted the NUS Downloader and you should see a "titles" folder. Open this folder and find another folder named 0000000100000101. In this folder should be yet another folder named 10
  • Find the WAD file in this folder (MIOS-64-v10.wad) and copy it to the SD card root.
  • Now we need to rename the wad (on the SD card). Rename it to RVL-mios-v10.wad

2. Download the MIOS patcher package. Put the cMIOSWiigator folder of the zip in the apps folder of the SD card.


Wii ----------------------


3. Put the SD card in the Wii. Go to the Homebrew Channel and run the MIOS patcher. (It is called "Installer for WiiGator's cMIOS").


4. It will ask for an IOS to use. Change the IOS to IOS249 and press A.


5. It will give you a warning. Wait for the Press 1 message to appear, then press 1. (Doing so before the message appears will quit the installer)


6. Now you basically all you have to do is press A every time:
  • Press A to go in the MIOS menu
  • Press A to choose Install cMIOS
  • Press A to "Load from SD card"
  • Press A to install the cMIOS
  • Press A to exit.
You should not need to change any other settings.



Once you are done, the cMIOS will be installed. You can now load GameCube games from backup discs!

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