Thanks but I have tried it already. Doesn't work as either the master password or the user password.
I followed the details here using the MHDD bootable ISO:http://www.seagateunlock.com/
There is always the possibility that unlocking just doesn't work with my motherboard. Some motherboard's bios automatically issue the freeze command to prevent viruses locking hard drives. I could have sworn I had tried this motherboard before but it was so long ago.
I used xboxhdm back then so perhaps I try that first.
Also turns out that you cannot do what I thought you could do (unlock without the password) using SECURE ERASE This post has been edited by alexh: Oct 24 2010, 12:08 AM