All of a sudden the NAS says "no drive" when I have one in there.  I don't hear any physical sounds that would lead me to believe that the drive is bad, however, the disk keeps whirring as if it is not seeing the NAS either.  I have tried updating FW to 2.05b10 and no luck.  Disconnected and reconnected, no luck.  Put a new drive in it and the NAS sees it fine.  I am thinking it is some type of logical issue with the drive, but the drive manufacturer keeps pointing me back to D-Link (who btw only answers one question and then goes away - not supportive at all!)  Can anyone out there suggest thing(s) to try?  Thanks!