Re: totally wiping harddisk using Knoppix



"J.O. Aho" <user@xxxxxxxxxxx> writes:

Aaron Gray wrote:
"John Hasler" <john@xxxxxxxxxx> wrote in message
news:87bq9jjytm.fsf@xxxxxxxxxxxxxxxxxxxx
Aaron writes:

<fixed mess cause by broken news client>

Now I need a good lowlevel command to wipe the darn thing.
How thoroughly? dd will fill it with zeros. 'Secure-delete' and 'wipe'
will render the data unrecoverable by anyone who is not prepared to spend
stupendous amounts of money.
Yes dd sounds like the one.
Whats the command line ?
I will remove all the other harddisks IDE leads just in case.

With cat (wipe out your whole hda):
cat /dev/urandom > /dev/hda

With dd (wipe out your whole hda):
dd if=/dev/urandom bs=2048 of=/dev/hda

Unfortunately /dev/urandom is relatively slow. using /dev/zero is much
faster, and arguably just as secure.


.



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