> I suppose that I could just reformat a hard disk if I want to erase
> its contents, but my understanding is that it may be possible for
> someone intent on doing it to still recover at least some of the
> data. There's a lot of highly sensitive data in this disk I want
> to dispose of. Is there a program that will truly wipe a whole
> hard disk clean?
Who are you afraid of? And just how sensitive is the stuff? Are you
going to junk the drive or try to sell it?
Because if the National Security Agency or the Central Intelligence
Agency or the Defense Intelligence Agency or other three-letter agencies
are after you, they probably already have what they need, so just sell
your drive on e-bay.
If the threat is just embarassing stuff and you hesitate to let amateurs
get it, dd if=/dev/zero of=/dev/sdx (if that is the drive in question)
should be enough.
In between, take the drive apart, remove the disk platters and work them
over with a finishing sander on both sides. Then toss the platters (and
the drive, too, since getting new platters and getting them in there
right, and not having a serious head crash from all the contamination
your are going to get in there will be more trouble than buying a new
.~. Jean-David Beyer Registered Linux User 85642.
/V\ Registered Machine 73926.
/( )\ Shrewsbury, New Jersey http://counter.li.org
^^-^^ 10:45pm up 11 days, 1:19, 2 users, load average: 2.29, 2.19, 2.07