Messages in this thread | | | Date | Fri, 11 Dec 1998 15:42:01 -0500 (EST) | From | "Richard B. Johnson" <> | Subject | Re: Unswappable memory needed is user space |
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On 10 Dec 1998, Paul Flinders wrote:
> > "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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