1 Reply Latest reply: Nov 18, 2012 12:02 PM by baltwo
Victoria Herring Level 2 (290 points)

I am trying to erase to reuse a 750G external harddrive and despite selecting the drive media name in Disk Utility and the Drive's name, it won't erase.  Says Can't unmount disk.


I have Verified the disk [both the media name and the indented drive's name] and also tried to Partition it but still get the same message - it says it has a GUID Partition Table, it has Read/Write status, I checked Get Info and I have Read-Write privileges.


Is this a Dead Drive??  Or is there any other way to erase it???

Mac Pro, Mac OS X (10.7.5), 17G RAM