So for a few months, my SD card for Wii U has been pretty much acting like it's corrupted. I tried everything, formatting, many things. Today, I decided to go on Mocha because it's the only normal thing. It loaded up with a picture that looked like it came from BIOS corruptions and finally, Wii U Menu. It was a corruption all right! Everything was going crazy, I wouldn't look at my Mii. I use the SD for Wii and everything else also and it works fine. What's happening here and how can I fix it?