Secure HD Erase

[Cyber Source]

Any of the rescue cd's for linux that can get you to a prompt should be 
able to do it, we do it all the time with dd and fill all the drive with 
zeros, 1 byte at a time. This will clear the entire drive, mbr and all. 
"dd bs=1k if=/dev/zero of=/dev/hda" , type that without the quotes. Also 
that assumes your wiping the first IDE drive on the first controller, if 
your not, adjust accordingly.

Frank Kumro wrote:

>I am backing up some information from a users computer and I was
>wondering how could I erase all the data so it makes it impossible or
>close to impossible to recover? They have some sensitive data and
>would not like the next owner of the computer to be able to view it
>easly (or at all). Any help would be great...
>  
>