I use an Arduino Mega with the Ethernet Shield. When I insert a 1GB SD Card and run the CardInfo sketch, I get the following message:
Initializing SD card...Wiring is correct and a card is present. Card type: SD1 Could not find FAT16/FAT32 partition. Make sure you've formatted the card
The card is formatted with SDFormatter V4.0
I tried to install sdfatlib to use the sdformatter with no success. Arduino complains: Invalid library.
Edit: I figured out to install sdfatlib. Now I can access the SD card. Seems to be an issue of the standard SD library