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 Forum index » Off-Topic Area » Security
Securely erasing data from hard drives and other media
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Bligh

Joined: 08 Jan 2006
Posts: 484
Location: California

PostPosted: Wed 14 Sep 2011, 12:51    Post subject:  

I like Daves tool above, but if you want to re-use the drive, it doesn't work well.
Cheers
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pemasu


Joined: 08 Jul 2009
Posts: 5463
Location: Finland

PostPosted: Wed 14 Sep 2011, 12:52    Post subject:  

Dave_G method is good one. I used it when I removed hdd`s from about 30 comps before they went to some recycling site.

It didnt take long, before the metal disk inside was something else as circular, flat plate. The covers dont protect from sledgehammer. And the job was done in 15 minutes. I can recommend. The pins were smashed all together also.

And you dont recognize the hdd as hdd after hammering.... instantly.
Security by obscurity....great disguise.
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PANZERKOPF

Joined: 16 Dec 2009
Posts: 280
Location: Earth

PostPosted: Wed 14 Sep 2011, 13:22    Post subject:  

Dave_G wrote:
Too complicated.
Below is the tool I use.
Works every time.
Dave.

Big hammer is universal tool for solving any problem. Very Happy
About erasing:
Modern HDDs have internal functions for erasing itself.
If we lock a HDD with user password then unlock it with master password,
all data will be sequentially erased. This is fastest way for erasing (in theory).

_________________
SUUM CUIQUE.
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11031
Location: Arizona USA

PostPosted: Wed 14 Sep 2011, 16:41    Post subject:  

But a sledgehammer also destroys those wonderfully strong magnets inside. Sad
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pemasu


Joined: 08 Jul 2009
Posts: 5463
Location: Finland

PostPosted: Wed 14 Sep 2011, 17:00    Post subject:  

That is true. I once got so strong one, that when I used it in our refrigerator door, it was impossible to get it off straight. Only way was to slide it to the edge or use the paper under it for swerving.
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Sylvander

Joined: 15 Dec 2008
Posts: 3427
Location: West Lothian, Scotland, UK

PostPosted: Wed 14 Sep 2011, 17:08    Post subject:  

Small strong magnets are very useful for finding plasterboard nails in stud-partition walls. Very Happy
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Dave_G


Joined: 21 Jul 2011
Posts: 459

PostPosted: Wed 14 Sep 2011, 18:03    Post subject:  

Those same small magnets are also great for finding needles in haystacks Laughing

Seriously though, you are of course right Flash, mechanical shock and magnets don't mix.

The hammer method is good if you no longer want/need a hard drive and want
to make sure that the data on it is not retrievable before disposing of it.
On the other hand if you want to reuse it (for yourself) a simply format will suffice.

By the way, those strong little magnets are made from Neodymium.
Here is an interesting link on how to get them and other uses for them.
http://www.dansdata.com/magnets.htm

Dave.
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