I just recieved my 500GB Seagate 5400RPM hard drive. I put it into the following enclosure: http://www.newegg.ca/Product/Product.aspx?Item=N82E16817392029 and tried to partition it. At first, it got half way through and then said that the Partitioning failed. I let it go on for about two more minutes ('cause it had no option to do it again, it was as if it was still in progress but everything was grey), then clicked on a new tab and stopped partitioning. Then the whole thing wouldn't show up on any computer, Mac or PC. I clicked the power button on the enclosure off then on again and everything seemed to work. I partitioned it and it went smoothly. Then I downloaded SuperDuper! and started the duping of my HD. It got about 11GB/100GB through (going at speeds of 5.4MBPS) and then said that it failed. I then retried (turning the power button off then on) and it showed up in Disk Utility but not partitioned. Now I try and partition it again and it fails. Can anyone help?? Is it the enclosures fault, the HDs fault or am I missing a step I need to take? EDIT: Right when I put in the drive, it says: The Disk you insterted was not readable by this computer.