Things You'll Need
Instructions
Open the front plastic flap on the Wii console and insert the SD card containing your data into the slot, with the label side facing up. Press the card in until it clicks into place.
Turn on the Wii. Aim the Wii Remote at the "Wii" button in the corner of the screen and press "A."
Point to "Data Management" and press "A."
Select "Save Data" and then "Wii" by pointing and pressing "A."
Open the "SD Card" tab.
Select any file listed on the SD card. Pick "Copy" to copy the data onto the Wii's internal memory. After the copy finishes, you can select additional files to copy. Alternatively, select "Move" to transfer the data onto the Wii and remove it from the SD card.