From: Brian Decker (reagan!
Date: Tue Dec 01 1992 - 21:46:40 CST

OK, here is a LATE summary. Regarding the following:
> Hello;
> I am currently involved in the construction of a Sun-based information
> system. One of my requirements is to be able to purge all data from several
> SCSI disk partitions upon request. I looked into the format->purge->analyze
> option provided with SunOS, but it appears that that particular command can
> only be used to affect entire disks, not single partitions.
> Do you (collectively) know where I might obtain some utility (preferably
> in source form) that can purge selected disk partitions ??
> Thanks for the assistance!

I received many, many replies that pointed out a possible solution using
dd if=/dev/zero of=/dev/rsd<your-partition-here> (thanks
( Should have thought of this first, but... )

However, my customer for this project has "high security data security
requirements" ( and I require a solution that is
approved by NCSC. Ray Smith ( pointed out that Los Altos
Technologies ( has a product, *UniShred*, available to do what I
need. Their advertising blurb (if you belive it) indicates that they are
approved for use by the NCSC, NSA, etc, etc, .....

Sooooooo, unless someone knows of a freely available source form utility that
is approved by the various 3 and 4-letter agencies, I think that my solution
is *UniShred*.

Thanks to all who answered, especially those who inferred my security
requirements from my generic question, and to all a good night!

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