I have been trying to get my new Dreamcast SD card adapter working on my Dreamcast for a few days now with no luck. I have tried formatting a test 2GB card as well as a 16GB card in FAT, FAT16, and FAT32 formats, and the system recognizes none of them. I am using the latest version of Dreamshell for this. I was sure to put the contents of the included DS folder in the SD card, and whenever I go to the ISO loader, the SD option is always grayed out. I did notice that the LED on the adapter turns on dimly when the system is booting up, and then turns on bright when the first splash screen for DS shows up, and then turns off when the black splash screen appears, and never turns back on again.
Is there something else I should be doing here?