Boot up DS and always tells me to turn off the DS and insert an SD Card in when it's already in.
I've tried everything and even emailed M3Adapter.com but i don't expect an answer really.
Has anyone ever experienced this problem?
Their FAQ isn't helpful for this subject.
Try m3-forum.com ... sort of unlikely you'll get an answer here. My own personal advice is, format the card to FAT32 and try again. Also what kind is it? Some cards are unsupported. Mine's a Kingston and works nicely.
Kingston 1 GB =/
And how do i format it to a FAT32?
Plug it into your PC's SD card reader (I assume you have one.. you'll need it ;) ) and go to "my computer" (this assumes Windows), right-click the icon for the SD card and pick Format. Select FAT32 and Start.