>
> "Richard B. Johnson" <root@chaos.analogic.com> writes:
> >
> > As the disk-drive warms up, it's geometry changes. Data that was
> > written when the drive was cold will be on some place on a track,
> > maybe on the center, maybe on an edge. When the drive is at its
> > final temperature, new data will be written in a slightly different
> > place on the track.
>
> They (also) use the fact that data which has been on the disk for a while
> "prints through" deeper into the magnetic oxide covering. Apparently you
> can quite literally shave off the top of the oxide and read older data
> beneath.
>
May have worked for older oxide media (15 years or so). More modern
media is plated.
Still, to be really secure, use a smelter as one respondent already
advised!
Cheers,
Dick Johnson
***** FILE SYSTEM WAS MODIFIED *****
Penguin : Linux version 2.1.131 on an i686 machine (400.59 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.
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