Things You'll Need
Instructions
Power off the Wii and open the card slot cover on the front of the console.
Insert the SD into the slot with the label facing the disc slot. Close the card slot cover.
Power on the Wii and select the "Wii Settings" icon. Select "Data Management" and choose "Wii Channels" or "Save Data."
Select "Copy" and choose "Yes" when prompted for confirmation. The data type you selected -- either Wii Channels or game-save data -- will be copied to the SD card, where it will remain accessible while freeing up the Wii's internal memory. Going forward, you can download content directly to the SD card from the Wii Shop channel.