wipe /dev/sda

[Odd]

Avi Greenbury wrote:
> Accessys at smart.net wrote:
>> according to security experts the ONLY sure way to clean a hard drive
>> is with a sledge hammer......
> 
> I've had at least one company tell me that they can recover data from a 
> drive so cleaned.
> 
> I've always gone with overwriting and reasonably secure disposal.
> I don't save any data that's worth expending any time to recover, and 
> anything that comes close is encrypted.
> 
> A while ago I had a brief look into this, and couldn't find any 
> compelling explanation of why overwriting a drive several times with 
> random data would not be sufficient, and several people explaining why 
> it should be, especially with modern hard drives.
> I'll see if I can dig out any of that data.

http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html

-- 
Odd