You can't remove magnetic remnants by over writing with a magnet that, by
its very design is meant to "leave" remnants.
A strong alternating current degaussing coil, such as used on color TV tubes
in the 60's and 70's, would do the job - if the disks/platters were removed
from the drive case.
--
Regards,
Richard Urban
Microsoft MVP Windows Shell/User
(For email, remove the obvious from my address)
"dennis@home" <> wrote in message
news:344A7880-C5BC-4935-86E2-...
>
> "Martin ©¿©¬ @nohere.net" wrote in message
> news:...
>> http://www.softpedia.com/get/Securit...g/Eraser.shtml
>>
>> Eraser description
>> Remove sensitive data from your hard drive by overwriting it several
>> times with selected patterns
>> Eraser is an advanced security utility, which enables you to
>> completely remove sensitive data from your hard drive by overwriting
>> it several times with carefully selected patterns.
>>
>> Eraser is FREE software and its source code is released under GNU
>> General Public License.
>>
>> The patterns used for overwriting are based on Peter Gutmann's paper
>> "Secure Deletion of Data from Magnetic and Solid-State Memory" and
>> they are selected to effectively remove magnetic remnants from the
>> hard drive.
>
> Shame that you can't guarantee to remove the magnetic remnants from a
> drive just by writing to it, no matter how many times you do it or with
> what pattern.