I received my Gateway 3DS a few weeks ago. I don't use my blue card because when I load up some of my ds roms, I only see a white screen. I'm fine with that because I can still use my old Supercard DSTWO. If anybody has any idea why this is happening and could let me know, that would be great, but don't sweat it. (I searched this and tried multiple times, but still no change.) That aside, I have a mac, so I use GW3DS SD IMAGER instead of win32 disk imager to install 3ds roms onto my micro sd card. After I flash the rom into my sd card, I eject and boot up Gateway. Everything runs perfectly, but the problem is that whenever I take out my sd card and put it into my computer, it says that the micro sd is unreadable. I can either ignore, initialize, or eject. How do I back up my files? Since my sd card is unreadable, I cannot simply copy and paste the rom files onto my desktop. Does anybody have any idea what to do? After searching around on google for any information, I am still with the exact same problem. As a last resort, I have decided to trouble you people, and ask for help. The problem is not in the micro sd because I have tried three different micro sd's, with three different adaptors, onto three different devices. Any and all help is greatly appreciated!