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Date: Thu, 06 Oct 2005 12:32:03 -0700
From: Joe S <js.lists@gmail.com>
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Cc: Jonathon McKitrick <jcm@FreeBSD-uk.eu.org>, freebsd-questions@freebsd.org
Subject: Re: Hidden spot on hard drives?
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Joe S wrote:
> Jonathon McKitrick wrote:
> 
>> the company where I work (with Windows) is evaluating a copy protection
>> product that stores info somewhere on the HDD where the user cannot 
>> touch it,
>> a format will not erase it, and Norton Ghost will not find it.
>>
>> 1.  Any idea where this info could be stored?
>> 2.  Any way the same thing could be done under FreeBSD?
>>
>> Thanks,
>>
>> jm
> 
> 
> # dd if=/dev/zero of=/dev/zero
> 
> Will overwrite the entire drive.
> 
Oops! Should have typed:

# dd if=/dev/zero of=/dev/ad0