[ale] [OT] Mojave Experiment

[Greg Freemyer]

Thanks for the info about the high-security drives.

I had wondered how they did that without injuring people.  See
http://www.deadondemand.com/products/enhancedhdd/ for an example of
one.

As to the heat, I have heard of people cooking their drives in
standard kitchen ovens.  I did not know why it was supposed to work.

Greg

2008/7/31 Jim Kinney <jim.kinney at gmail.com>:
> Not to rain on the new toy parade but that's overkill even on my standards
> (along with thermite - which is also fun!).
>
> A serious note to this is:
>
> All that is absolutely required is to raise the temperature of the platters
> above the curie point when they loose all magnetic properties. The curie
> point for most materials is below the melting point of most of the substrate
> materials.  450F and higher and the disk is no longer magnetic. So a flash
> heat source of 2000F for a few milliseconds will provide enough heat to
> obliterate the magnetic fields on the surface (and leave some nice scorch
> marks). Thus special, high security drives have a small plastic explosive
> charge embedded in the cover and base that can be detonated manually,
> heating the platters over the curie point without being a safety hazard to
> nearby objects. It still buckles the cover and might throw some screw heads
> around, though.
>
> On Thu, Jul 31, 2008 at 11:11 AM, Mike Harrison <meuon at geeklabs.com> wrote:
>>
>> > The only real way to ensure data is gone off a drive is to drop it into
>> > a crucible and turn it into molten slag.
>>
>> Sounds like a way to expense a nice plasma torch.
>>
>> Which, if you haven't played with one, is a wonderful toy.. er.. tool. :)
>>
>>
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>
>
> --
> --
> James P. Kinney III
>
>
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