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Re: diskscrub and shred

From: Pádraig Brady
Subject: Re: diskscrub and shred
Date: Mon, 30 Nov 2009 23:21:51 +0000
User-agent: Thunderbird (X11/20071008)

Jim Garlick wrote:
> I think the main thing shred needs is the more modern 3-4 pass overwrite
> algorithms.  Supposedly the full Gutmann algorithm is really only effective
> on MFM drives, and 3-4 passes is all you need on modern drives.  As Toni
> points out, it would be extremely advantageous to have this installed on
> every machine that runs coreutils.

Note since coreutils-7.1 shred has defaulted to 3 random passes:

> I could prepare a patch to coreutils to make various overwrite patterns
> including Gutmann selectable via shred option and a NNSA NAPS-14.1-C
> compliant pattern the default (random, random, 0x00, verify).  This would
> make my employer happy.  Would such as patch be considered, Jim M.?

The verify step you mention, would address the TODO in the commit above.


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