Secure Hard Disk Disk Erase
01-05-2012, 19:00
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#16
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Inactive
Join Date: Jul 2009
Location: In the thick of East Anglia
Posts: 573
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Re: Secure Hard Disk Disk Erase
I wouldn't waste my time with erasing software since they are not being used again. A lump hammer across the platters will render them useless.
Reason is the head sits a nat's wisker above the platter when operating and cannot follow any kind of surface irregularites. Moreso the ones a lump hammer can inflict.
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01-05-2012, 21:57
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#17
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Guest
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Re: Secure Hard Disk Disk Erase
Take apart the drives; remove the platters; drill 12 holes around the circumference and then mount a clock mechanism in the middle. Hang on your wall for a nice art-deco timepiece.
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01-05-2012, 22:11
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#18
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Mum 15/08/46 - 30/09/20
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Re: Secure Hard Disk Disk Erase
One option smash them open then take a angle grinder to the platters.
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01-05-2012, 22:15
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#19
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cf.mega poster
Join Date: Jul 2003
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Re: Secure Hard Disk Disk Erase
We use Shred-IT and get them to dispose of all our disks now.
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01-05-2012, 22:17
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#20
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cf.mega poster
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Re: Secure Hard Disk Disk Erase
Quote:
Originally Posted by Waldo Pepper
I wouldn't waste my time with erasing software since they are not being used again. A lump hammer across the platters will render them useless.
Reason is the head sits a nat's wisker above the platter when operating and cannot follow any kind of surface irregularites. Moreso the ones a lump hammer can inflict.
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I used a large sledge hammer which completely physically destroyed the hard drive and the platters which were physically disroyed.
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01-05-2012, 22:44
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#21
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Hello !
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Re: Secure Hard Disk Disk Erase
CCleaner has an option to set the delete pass at 35 times, more than enough.
Then snap off a few pins on the drives too.
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01-05-2012, 22:52
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#22
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Inactive
Join Date: Dec 2007
Posts: 18,398
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Re: Secure Hard Disk Disk Erase
Quote:
Originally Posted by Hom3r
One option smash them open then take a angle grinder to the platters.
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Or just buy a larger angle grinder and go through the whole drive
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01-05-2012, 23:09
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#23
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Inactive
Join Date: Oct 2006
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Re: Secure Hard Disk Disk Erase
Or just toss them into an active volcano.
It might be easier to take them to PC World for a clean-up and they'll probably disappear forever...
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01-05-2012, 23:25
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#24
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Re: Secure Hard Disk Disk Erase
Honestly Rob, if I were you, I would forget that you ever asked. Clearly they love and respect you but at the same time are taking the.... Hey, I laughed
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01-05-2012, 23:27
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#25
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cf.mega poster
Join Date: Aug 2004
Posts: 11,207
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Re: Secure Hard Disk Disk Erase
If speed is the only concern, nothing beats the speed and thoroughness of thermite.
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01-05-2012, 23:44
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#26
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Inactive
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Re: Secure Hard Disk Disk Erase
I think what I've learnt from this thread is that the destructive approach is preferred simply because it's more fun
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02-05-2012, 00:33
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#27
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Guest
Location: West Sussex
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Re: Secure Hard Disk Disk Erase
Woohoo! Break them, you know you'll enjoy it. However, telling the boss that you blew up the kitchen as a result of microwaving hdd platters and the all important cup of water(ignore the sparks) may not be the absolute answer. If I'm wrong heyho, it's not unusual
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05-05-2012, 00:53
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#28
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Re: Secure Hard Disk Disk Erase
Gutman was designed for another era, when drives were not stretching the media capacity to the limit. One overwrite pass will defeat anything except what the security services may have.
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05-05-2012, 10:48
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#29
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Inactive
Join Date: Jul 2009
Location: In the thick of East Anglia
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Re: Secure Hard Disk Disk Erase
Quote:
Originally Posted by Matth
One overwrite pass will defeat anything except what the security services may have.
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Another good reason to smash the drive to pieces.....
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05-05-2012, 20:09
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#30
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Inactive
Join Date: May 2007
Posts: 1,570
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Re: Secure Hard Disk Disk Erase
Quote:
Originally Posted by Matth
Gutman was designed for another era, when drives were not stretching the media capacity to the limit. One overwrite pass will defeat anything except what the security services may have.
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"Gutmann", in all 35 passes was never needed. It's a collection of wipe patterns all targeted to different drive encoding methods. If you know the method used, you only need to run the pattern for that drive.
The paper Gutmann wrote as well theorising recovery from overwrite data was also based entirely on theory and had no basis on what is, or was ever actually possible.
There hasn't been any recorded evidence of any data been recovered from an overwrote drive, and the whole "the heads don't track perfectly" thing where it MAY be possible to recover what the previous write was would require manual per bit recovery, and just isn't really at all feasible.
Even the security services can't recover from one a one pass wipe.
Still, I've worked for many companies that have to dispose of drives, and the favoured method of most of them is shredding.
It's fast and worry free, you see the drives go in, you see the ground up drives come out. It's a lot faster than having to bother with wipes.
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