I had two 1.5TB drives in an OWC enclosure. I had it formatted as 'Mac OS X Extended (Journaled)' so that it showed up as one 3TB volume when it was mounted. One of the 1.5TB drives failed yesterday (makes a loud noise when trying to spin up). I suspect the other 1.5TB drive is completely fine as it does not make any odd noises when I remove it and plug it into a single HD slot enclosure. the problem I'm having now is that I cannot access any of the data on the 1.5TB drive that I suspect is OK...... it does not mount, but it DOES show up in Disk Utility. When I try to verify or repair permissions, i get the following error: "partition map check failed because no slices were found" I even tried Disk Warrior, but the drive does not show up in the list. any help would be GREATLY appreciated!! thank you!