I've tried formatting my SD card via the USB from XP for both FAT and FAT32, both of which let me transfer files fine, but the GP2X won't read them, so it may as well be blank.
Those of you who got it working, (specially those using *nix), did you use a card reader or via USB? And what filesystem did you format it as?
Those of you who got it working, (specially those using *nix), did you use a card reader or via USB? And what filesystem did you format it as?