I'm not in town, so can't check the specifics. To memory, I hit "record" and the deck just sits there with "stop" on. I think if I go to look at files it gives me a "disk full" message even though the card is empty. I also can't format the card, I get the "disk full" message. I put the card in my HD-P2 and, after format, it works just fine in the tascam, but still wouldn't work in the MT, not even a re-format.