So recently I was dumb and tried to use my 8GB Micro SD card on my XBOX 360. It made me reformat it. After that it became unusable on my m3 Real. So I went into Disk Utility (Mac OSX) and reformatted it to 1 Partition (Master Boot Record). It now works again, however it is very slow. It is probably three times as slow as it used to be when I copy files to it from my computer. What should I do? Can it be fixed, or do I have to get another card? What is a good card to get?