I've finally fixed my two microSD cards FORMAT THE CARD USING YOUR DIGITAL CAMERA I first bought two microSD cards when I first got my supercard lite. One was an ultra2 and the other was a generic sandisk (both were 1gb). A few months later.. One day I gave DSO's homebrew database another whirl (the homebrew db had corrupted my cards some how before that, but nothing serious. I tried out a rubber band game and I must say that was fun. Then I downloaded wolfenstein 3d hoping that it might finally work after corrupting it's own files/folders every time I downloaded it. ... ... ... It didn't actually explode, but I did when I discovered that windows could not recognize my ultra2 at all. Great, so my supercard can still use it, but I cant even format it through windows, and moonshell and dso would not load anymore. My other card corrupted it self a month later. I again used dso's homebrew db and downloaded nethack. Same issue, EXCEPT I tried to edit the card it self via hex editor (someone here at gbatemp suggested that, but also said do so at my own risk). I don't know very much about hex editing but I think I replaced the wrong sector with 00's. Now this card was totally useless and I end up buying another two at $15 each. For some reason, it occurred to me that almost all digital cameras can format the memory card, so I gave it a try and now i'm a happy temper .