On Sat, Apr 23, 2005 at 14:00:21 -0400, "Robert P. J. Day" <rpjday@xxxxxxxxxxxxxx> wrote: > On Sat, 23 Apr 2005, Bruno Wolff III wrote: > > another solution is to boot from a CD and just rewrite the entire > drive several times using "dd" -- enough times to wipe that trace > magnetization. start with > > # dd if=/dev/zero of=/dev/hda ... > > now, it's too bad there's no /dev/ones. > > but you could also keep overwriting with /dev/random. after a > while, i'm pretty sure there won't be much salvageable from the drive. That won't cover remapped sectors. You should be able get a count of remapped sectors using smartctl. But I think if you are worried about people paying to have data extracted from the trace magnetization, you are better off destroying the drive with witnesses.
