Things You'll Need
Instructions
Backing Up
Power on the Wii and load the Wii menu. Click the "Wii" button in the lower left corner of the screen.
Select "Data Management," and click the "Wii" button to bring up the contents of your Wii&'s hard drive.
Browse the channels you&'d like to back up to the SD card, and click on the icons to bring up the option to "Copy to SD card" or "Erase." Select the copy function and wait for the information to copy over.
Delete the channel that you backed up from your Wii hard drive when the copy is complete. If you want to copy it back, you can do so by selecting the "SD card" option at the "Data Management" screen and copying the files to the Wii.
Repeat with any other channels you want to back up.
Accessing and Playing Backups
Return to the Wii Home menu and click the "SD" card icon in the lower right corner. Wait for the SD card contents to load.
Browse the channels stored on your SD card and locate the backup game you want to play. Click to select it.
Select "Play" and wait a moment for the console to buffer the game and load it, then start playing.