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Bones McCracker
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Joined: 14 Mar 2006
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PostPosted: Wed Nov 14, 2012 7:24 pm    Post subject: Reply with quote

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.


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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ratmonkey
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Joined: 13 Aug 2006
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PostPosted: Thu Nov 15, 2012 2:25 am    Post subject: Reply with quote

I always stick my old drives in the drill press and put a few holes through them. If someone goes through all the effort that would be needed to recover the remaining data, then they deserve it.

For the ultra-paranoid: http://www.infodogsecurity.com/wp-content/uploads/2012/07/harddrive.jpg
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John R. Graham
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PostPosted: Thu Nov 15, 2012 12:00 pm    Post subject: Reply with quote

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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