I took a smaller (400GB) fully functioning drive out of my Drobo, and want to reformat it and give it to my Dad for use with Time Machine via a USB to SATA device.
I can format it to Mac OS Extended (Journaled) with Disk Utility, and write to it and access the info fine. However, I want to secure erase it with the 7 pass option, and it always fails. Even backing off and trying to write over it one time with zeroes fails, with various errors. It cranks for a while, typically an hour or so, before failing. Have tried using it on 3 different Macs, Leopard and Snow Leopard, and two different USB cables.
Any idea what’s going on? Wasn’t able to find anything on Apple support pages.