I believe that you should be able to do:

dd if=/dev/zero of=/dev/hda
dd if=/dev/urandom of=/dev/hda

Do that about 3 times.  I imagine that it would be pretty difficult for
anything to be on the drive.

But, I think that you problem might actually reside in the BIOS...  unless
you have a flash burner that might be a hard one.

		--Ted

On Fri, 25 Apr 2003, Kyle Faber wrote:

>
> 	I have a client who has a nasty hacker problem.  I have reason to believe
> that there is some sort of "sleeper" application inside some kind of hidden
> partition.  I came to this conclusion after seeing evidence of the hack
> return on a repartitioned, formatted, disconnected machine.  The hacked users
> returned, the machine begins to attempt to phone home.  There is no evidence
> of any hidden partitions using linux fdisk.
>
> Any suggestions?  I have heard some form of the dd command can be used to
> overwrite ALL information on this disk.  Anyone have any tips for that?  Or
> any tips in general, I am tearing my hair out on this one.
>
> Thanks a bunch!
> --
> Kyle Faber
> Account Manager
> EMR Internet
> kyle@emr.net
> 623-581-0842 voice
> 623-582-9499 fax
>
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