Grind them up.  There is nothing else you can do to "permanently" wipe

disks.  Residual magnetism is always there provided good enough

equipment.  If your data is that sensitive there is nothing else but the

grinder.
On Mon, Dec 31, 2007 at 10:25:25AM -0800, Jon wrote:

quoted text
> hi

>

>  I see a lot of programs that are available to clean up the disks for

> Windows OS. Not wipe a disk but clean up deleted files so they cannot be

> recovered.

>  Is there any program for OpenBSD that will clean up the disks so that

> deleted files cannot be recovered.

>

>  (not looking to delete a file securly - but to wipe the disk clean of

> deleted file with out affecting the OS)

>

> -jon