can't erase hard drive
Hey there,
I was wondering if someone could help me. I am getting rid of my imac from 2007, followed the instructions to erase my hard drive -- restart computer, hit command R -- disk utility, Format: Mac OS Extended (Journaled) and Erase -- except I get the error message:
Disk Erase failed
Couldn't unmount disk
Does anyone know how I can get around this to just delete all my data? I have OS X, but don't have the original disk.
Thanks a lot, I really appreciate it.
iMac, Mac OS X (10.4.11)