[clug-talk] Random numbers in Linux: an example

Mark Lane mark at harddata.com
Thu Sep 8 14:21:20 PDT 2005


Gustin Johnson wrote:
> A practical application is wiping a hard drive so that data recovery is not 
> possible.  The following should be repeated 4 to 8 times depending on ones 
> level of paranoia.
> 
> dd if=/dev/zero of=/dev/hdx
> dd if=/dev/full of=/dev/hdx
> dd if=/dev/urandom of=/dev/hdx
> 
Or the Budget of the people you are keeping the information 
from. If they can afford to look at the platters under an 
electron microscope, I would suggest physical destruction of the 
platters. And no throwing them in the fire place probably isn't 
good enough.

-- 
Mark Lane, CET <mark at harddata.com>
Sales Manager, Hard Data Ltd. <http://www.harddata.com>
11060 166 Ave, Edmonton, Alberta, T5X 1Y3
Phone: 01-780-456-9771 Fax: 01-780-456-9772
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