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atosniper

Wiping HDD with magnets

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Simple exposure to a magnet isn't really enough - variance in the field is generally what does the work.

With a permanent magnet you'd do this by moving it around.

Rare Earth magnets would be what you're after. I suspect that a HDD inside it's steel case would probably survive the ordeal.

 

In commercial settings, you can get bulk magnetic eraser machines, they generally have an opening sufficiently big to fit an old 12 inch diameter reel tape in, then you start it up and let it do the work (about 20 seconds from memory). Fairly sure they operate by electromagnet that both moves and has variable polarity.

 

Really, it's probably easier to just pull the drive apart. Harvest the magnets inside of it and physically damage the platters yourself to prevent rereading. Do a zero-fill first if feeling paranoid.

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For shits and giggles fill the drive with pool acid.

 

* Do this in a place that is well ventilated, in an area the acid can be contained and diluted

** I take no responsibility for damages to person or property.

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If you want to destroy the data beyond recovery and the drive is foobar or never to be used again just attack it with a sledge hammer or a hammer and spike.

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They make good shooting practice targets, too - visibly react to a hit, and dense enough to retain smaller calibre rounds.

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