Basically, due to an inverted polarity of a USB front panel I had two seemingly dead external hard drives. As luck would have it one of the drives (put into a new enclosure) works GREAT. The other (Western Digital Caviar Green 2TB) is detected but declared 'Unallocated' by Disk Management (I'm using XP on a laptop to work with these drives at the moment). It's shown as being 'Unknown' and 'Not Initialized' as well. I am given the option of Initialize, which I have not done.
My suspicion is that the filetable could have become corrupted, however I'm completely unsure if it was zapped while plugged into the messed up USB port.
Thus far I have used Active@ Partition Recovery to see if I could scan anything. It found nothing. So at this point I'm wondering if trying to restore the partition (this drive had a single partition) seems less important than trying to get the files off one way or another.