I bought a cheap USB SD card reader yesterday in preparation for getting my 3DS today. After taking some photos with my 3DS I wanted to have a look at the contents of the SD card with my computer. On my linux machine I plugged the USB card reader in with the SD car in it and the OS didn't even recognise that it was there. On my windows machine I did the same and it found it, but said it needed to be formatted before it could be read. I decided not to format it just yet. At this point I put the SD card back in the 3DS and checked that the photos were still there, they were. I copied the photos to the internal memory of the 3DS so I wouldn't lose them when I formatted. Put the card back in the USB reader on my windows machine and told it to format. At the end of the formatting process it said that the format had failed. Tried clicking on the drive again and got the same "needs to be formatted" message as before. Tried formatting again and again it failed. Put the SD card back in the 3DS and now when I open the camera app it says "The device inserted in the SD Card slot cannotbe used. (OK)" If I go into Settings, Data Management, 3DS, Extra Data, it shjows SD card with 0 open blocks. Is there a way to format the SD card through the 3DS like the PSP can do for its Memory Stick?