I've been trying to fix this mess i created for the last few hours and i'm out of ideas.
I have Windows 7 64 bit and already have a 4TB drive in GPT Disk mode that has worked fine for years. I had another spare 3TB drive that i decided to enhanced secure erase as i wanted to get rid of it. I have used HDDerase (via UBCD) plenty of times over the years with no issues, but this time while trying to wipe the 3TB drive, which didn't really need to be wiped as it's barely used, i kept getting errors about how the drive cannot be unlocked even though i went through the standard procedures of setting IDE mode, hard shut down, etc.
Finally after reading the FAQ i decided to go for the 3rd option as the two other methods failed, third option being where you disconnect the drive, turn on the PC and just before HddErase is started you connect the drive thereby bypassing the BIOS lock. This did work and it showed 510 minutes as the time required for erase, but after 6 hours or so, an error showed up and erase was abruptly cancelled, and ever since then i've been unable to see the full 3TB and stuck with 746gb even in GPT Disk mode.
I think the issue is that when HDDErase usually completes it writes the LBA info at the end or something like that, but being that the procedure ended abruptly, it screwed things up. When i looked at LBA info, it shows around 1.5 billion while the hard drive label states it's around 5.8 billion.
Anyone know how to repair this and how i've managed to screw this up so badly? I've connected the drive to another computer and it still shows as 746gb. I tried using MHDD and the HPA command i found via google but i get an error saying this only works in LBA mode or i get an error that the drive hasn't been detected and the drive isn't even shown in the list rather just port connection numbers.
Any idea? Maybe even how i can successfully write the LBA info manually if that is the issue, as i failed to do that with MHDD...if that is the issue in the first place.