Things You'll Need
Instructions
Turn the Nintendo Wii off.
Find the SD card slot located on the front of the Nintendo Wii.
Open the SD card slot and insert a SD or SDHC card. The label of the card must face the disc compartment. Press it in until it "clicks."
Turn the Wii on and wait for the channel menu to load.
Select "Settings" at the bottom of the channel menu, then "Data Management" and "Channels." Here you will find the amount of available space (or blocks) your Nintendo Wii has with the addition of the new card.