Originally posted by: DaFinn
Nice suggestions

BUT... The HDD will be RMA'd. I need to clean it WITHOUT physically breaking it!!! So magnets would work? I tihnk I'll take apart an old hugea$$ speaker...
If you have a nonfunctional drive and you *cannot* risk letting anybody access the drive's contents, you have a few options:
1) Try to repair the drive by replacing the circuit board with one from the EXACT same model drive. This is only applicable if the failure is electronic; if the motor or drive head is shot, you cannot fix the drive. Once repaired, you can wipe the drive (although you've long since voided your warranty at this point).
2) Find and use a hard drive degausser. You are, however, unlikely to find one of these anywhere but a data recovery-type firm. An MRI scanner's magnets would probably be powerful enough, but that's about it. Even speaker magnets at close range won't scramble the data.
3) Destroy the drive.
All that said, it is highly unlikely anyone will disassemble your drive and attempt to scan the platters, unless they have reason to believe there is VERY valuable data on it. There is a *slim* chance that the drive could be repaired and returned to service without being wiped by the drive company, in which case whoever next received the drive *might* be able to pull *some* data off of it.
IOW, I don't think you need to worry about it.