Originally Posted by
deubster
+1
I've seen this twice on friends' external drives. The drive was unrecognized, but once removed from the external housing, the internal drive was fine, as was the data. Certainly worth a try, and you're no worse off as to future options. Either internally mount the drive or buy a IDE/SATA to USB cable (about $12-$20) and connect the raw drive to a USB port.
It's happened to me personally more than once.