I have a Western Digital MyBook Essentials 2.0 1 TB external hard drive. It's been running fine for the past 2 or 3 years now, but all of a sudden it's stop mounting in OS X. I'm running Lion right now, and it's worked fine in it up until today. Oddly enough, I did use the Lion Recovery Disk Assistant to create a recovery partition this same drive the night before. Would this have totally ruined the hard drive? It's formatted as FAT32. Like I said the hard drive doesn't mount in OS X and it's not recognized in Windows. When I go to the Disk Utility in OS X, it does show up there, but I can't do anything with it. Can't verify the disk or repair it. I've tried using WD's disk verifying tool in Windows and it passed both the quick check and the 11 hour extended check with no problems. And I have done the simple things like trying it in different USB ports, restarting the computer, using different USB cords, unplugging and replugging the hard drive. Any suggestions? If possible, I would like to retain the data on the drive of course.