First off, I plug in the external it's detected perfectly (YES! I am using external power). I run a game, say a PS2 or PS3 game. The external is no longer detected in any game and it vanishes on return to XMB. I'm not sure what's wrong at this point I've tried other drives and the same result happens. I think the external device itself (Vantec NexStar 3) is fine. Using OFW 3.56.