I blew on the slot and pressed a button on my memory card (its unofficial and I honestly have no idea what the button does) and it showed up. Go to gcmm and its not working again. Pressing the button ...
GCMM will test for a SD2SP2 device. If it finds it, it will attempt to use it as a fat device, then will ask which Memory Card you want to use (as in wii mode, where you can select which memory card ...