Wii:Backing up your NAND

A NAND backup is an important safeguard to have, in the rare case you brick your Wii. As well, NAND backups can be imported into emulators such as Dolphin, where you can launch an emulated copy of your Wii's System Menu. To backup your NAND, you'll need:

Prerequisites

 * A hacked Wii, with BootMii installed as IOS (should be most installations)
 * A 512MB SD card or larger
 * A GameCube controller to navigate BootMii, because Wii Remotes aren't supported (optional; you can use the POWER and RESET buttons on the Wii to navigate instead)

Procedure

 * 1) Insert the SD card into your Wii.
 * 2) Open the Homebrew Channel.
 * 3) Press the HOME buton on the Wii Remote, then select "Launch Bootmii". Your Wii should reboot into BootMii.
 * 4) Use the POWER button, or right on the GameCube D-pad to cycle between options, and select them with the RESET button, or A on the GameCube controller.
 * 5) Select the option with the image of the gears (Settings).
 * 6) Select the option with the image of the green arrow pointing to the SD card. This is the backup option.
 * 7) BootMii will begin backing up your NAND to the SD card, showing the progress on the screen. If your see any "bad blocks", don't worry; they're to be expected in the type of NAND chips used by the Wii.
 * 8) Once the backup has finished, press any button to exit the backup screen.
 * 9) Exit BootMii by selecting the option with the image of the big arrow (Exit), and then selecting either the Wii Menu option or the Homebrew Channel option to exit to either.
 * 10) Copy the 'nand.bin' and 'keys.bin' on the SD card to a safe location on your computer; these are the NAND dump files needed to restore your Wii in case you brick it.

Restoring a backup

 * 1) Make sure the 'nand.bin' and 'keys.bin' files that you want to restore from are on the root of the SD card in the Wii.
 * 2) Complete the same steps as before, but this time select the option with the image of a red arrow pointing away from the SD card. This is the Restore option.
 * 3) The restore process should begin.