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BoneKracker
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Joined: 14 Mar 2006
Posts: 1499
Location: U.S.A.
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 Posted: Wed Nov 14, 2012 7:24 pm Post subject: |
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| energyman76b wrote: | | BoneKracker wrote: | That's nice. He may be an "expert", but the Manning case this year reveals that the U.S. Army can recover data from single-pass zero-wiped disk.
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hm, lets see - from what I gather using google, Manning didn't even really wipe the disk ONCE. He deleted and reinstalled. Oopps. Of course, all the old data structures were there.
Memory cards are a different beast, but this is about hard disks. |
From what I read, he deleted his files on his personal Macintosh laptop, then reinstalled the operating system, electing to do a full format of the disk. Then, at somebody's advice, he also did a zero-wipe of the disk, but only opted for a single pass.
But, I don't feel like looking for what I read, so let's assume I misunderstood it, and that you're right and I'm wrong. Conclusion: a single wipe of a disk is adequate, as you said.
If all else fails, give the disk to a naked gladiator in a Turkish prison.
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-- Headline of a document on Winston Smith's terminal in his cubicle at the Ministry of Truth, seen briefly in the background in one scene of the movie rendition of Nineteen Eighty-Four. |
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ratmonkey
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John R. Graham
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Joined: 08 Mar 2005
Posts: 6594
Location: Somewhere over Atlanta, Georgia
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| Posted: Thu Nov 15, 2012 12:00 pm Post subject: |
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I once held my bulk tape eraser electromagnet up against a spinning hard drive until it could no longer read the servo platter. Continual recalibrates ensued. No messy residue, either. 
- John
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