[ale] Need an iso to wipe hard drives.

[Chris Fowler]

I also used to have a program that I wrote which would open a file for
RW and fill it with random stuff.  If would seek back to the beginning
and repeat a few times then close and finally delete.


On Fri, 2010-04-16 at 10:58 -0400, Chris Fowler wrote:
> On Fri, 2010-04-16 at 10:07 -0400, krwatson at cc.gatech.edu wrote:
> 
> > Darik's Boot and Nuke ("DBAN")
> > http://www.dban.org/
> > 
> > DBAN will not wipe sectors that have been reallocated however, Secure Erase will. This only works on IDE and SATA dirves.
> > http://cmrr.ucsd.edu/people/Hughes/SecureErase.shtml
> 
> now this brings up an good topic for this list.
> 
> Here is how I've done it in the past from bash
> 
> 
> rm stuff_to_delete
> dd if=/dev/urandom of=/tmp/file;rm /tmp/file
> dd if=/dev/urandom of=/tmp/file;rm /tmp/file
> dd if=/dev/urandom of=/tmp/file;rm /tmp/file
> 
> Now the idea is that we first delete the stuff then we fill up disk with
> random crap.  dd will error when we've ran out of space and rm will
> remove the file.  We do this 3 times.
> 
> Not sure if this is good idea or not?
> 
> I've got a cronjob on my desktop that creates a 4G file of urandom every
> night around 1AM and then deletes it.  Anything I've deleted during the
> day should be blown away at night.
> 
> 
> 
> 
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