Berend Tober wrote:
>
> I found this simple suggestion via Googling on techniques for scrubbing
> hard drives prior to disposal:
>
> dd if=/dev/random of=/dev/hdb && dd if=/dev/zero of=/dev/hdb
>
> (repeated in a for-do loop several times)
>
> This seems simple and inexpensive, but I was wondering about a couple
> things. Specifically:
>
> How does it know how much data to write or when to stop?
>
> Anyone have experience or comments regarding the effectiveness of this
> technique?
>
> I imagine it could require some time, too.
>
>
> I also read a little about the standard shred utility, but there seemed
> to be some cavea related to ext3 file systems.
>
> -- BMT
I can't answer your questions, but here are some pages about Autoclave, which I've used. Works on any IDE drive, regardless of the FS type. Apparently this program used a modified version of shred.
Original (?) page about Autoclave...
http://www.infotech.siu.edu/csc/howto/common/autoclave.html
End of life notice from 3/3/2005...
http://staff.washington.edu/jdlarios/autoclave/
...and the research it was apparently based off of...
http://www.cs.auckland.ac.nz/~pgut001/pubs/secure_del.html
--
--- Dave Woyciesjes
--- ICQ# 905818
--- AIM - woyciesjes
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