[Jason Wathen]

I know this is a fairly old post but I want to add because I’m sure this will continue to happen with these drives. I tried to mount my 9TB OWC Mercury Elite-AL Pro Qx2 on 4 different Mac computers with no luck. According to Disk Warrior it was a directory issue which I repaired with the Disk Warrior software. Like mentioned above I did boot up disk warrior first then connected the drive. Very close call, be careful if you decide to use these drives. Oh one more thing never press the initialize button unless you want to completely reformat the drive you will lose everything and even disk warrior will not be able to retrieve it all.