Things You'll Need
Instructions
Insert your SD card into the designated slot on the front of your Wii console.
Power on your television and your Wii console. Make sure the Wii menu is visible on your TV set.
Select the "Wii Systems" icon on the main menu.
Chose the "Data Management" option from the Wii Systems menu.
Select the "Save Data" option.
Select "Wii" as the source of your saved data.
Chose the "Copy" option to backup games played on your Wii. Select "Yes" to verify that you want to copy your games, then select "Copy to SD Card." Your Wii games will now backup to an SD card without modding.