I am running CM7 and I decided to erase my sd cards contents via one of the menu settings ( I know real bright!) Anyways, now I get the message that the sd card has a blank or unsupported filesystem. It also says the sd card isn't mounted when I run ROM manager. I tried to mount the sd card through recovery and settings to no avail. I also tried formatting through both methods and that doesn't work either. What should I do???