Guarding against bricking your Wii with BootMii

BootMii allows you to make a backup of your Wii's NAND so that you can recover from almost any type of brick1. It does this by installing as boot2 on a compatible Wii, and is executed before the Wii system menu . BootMii also allows the execution of special homebrew applications not usable by

What you should install first

  • nothing

What you need

  • SD Card (an SDHC card is also suitable if you are at firmware version 4.0 or higher)
  • Spare 528MB of space on an SD/SDHC card if you want to perform a Wii backup

Installation if you don't yet have the HBC.

  1. Launch the Hackmii Installer using one of the methods on this page
  2. Read the warning message and wait for the "Press 1 to continue" prompt to appear
  3. When the prompt does appear, push 1
  4. Take note of what you can and can't install then push A to Continue.
  5. Select "BootMii…" with the D-pad and push A.
  6. BootMii can be installed in two modes, boot2 or IOS
    • If you have a newer Wii (from the 2nd half of 2008 onwards) then you can only choose IOS install.
    • Boot2 is much safer than IOS install, so you should choose that if you can.
  7. Select the option best suited to you (boot2 or IOS) with the A button.
  8. The installer will warn you that files need to be installed to an SD card. Insert one if you don't want to use your current one.
  9. The installer will ask you if you want to install BootMii, select Yes, continue.
  10. BootMii should install. If you installed as boot2, reboot the Wii and it should start. If you installed as IOS, use the Homebrew Channel to start it (there will be a new button)

Upgrading or installing BootMii if the HBC is still installed

  1. Create a subdirectory called sd:/apps/BootMiiHBCUpgrade/ on your SD card.
  2. Download Hackmii Installer v0.8 or later from this page.
  3. Unzip HackMii Installer and copy boot.elf to sd:/apps/BootMiiHBCUpgrade/
  4. Start HBC and load the /apps/BootMiiHBCUpgrade/boot.elf application.
  5. Follow installation steps from step 8 of the appropriate installation method.

Starting BootMii

  • If BootMii is installed as boot2
    • Restart your Wii. The BootMii menu should load.
  • If BootMii is installed as an IOS
    • Start the Homebrew Channel and push the Home button.
    • Choose the BootMii option that should now appear.

Using BootMii

  • BootMii only supports Gamecube controllers and the Wii's own buttons (Power/Reset/Eject)
    • Wavebirds are sometimes recognised/sometimes not. Try ensuring they are switched on before turning on the Wii
  • The Power button chooses the next option and Reset button selects an option. Eject is only neeeded when prompted.
  • If BootMii is installed as boot2, you can make BootMii autoboot to the system menu or Homebrew Channel after a specified number of seconds of inactivity by altering sd:/bootmii/bootmii.ini by adding or changing the following lines (in particular, note the lack of the # character):
    • BOOTDELAY=5 (or any other number)

Making a backup

  1. Navigate to the Options Menu (fourth one, a pair of cogs) using the Power button or Gamecube controller and push the Reset button or A.
  2. Select the first option
  3. Insert an SD card with 528MB free and continue, pushing the requested buttons
    1. There will usually be several bad blocks during install. This is normal.


  • I can't control BootMii with the Wii Remote. What's wrong?
    • See the start of the Using BootMii section above.
  • How do I stop BootMii as boot2 running every time I boot my Wii?
    • Use the autoboot option mentioned in Using BootMii above or rename the bootmii directory on your SD card.
  • How much space does a NAND backup take?
    • About 528MB.

What Next?

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