From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <htd@fancy-poultry.org>
Received: from mail.saout.de ([127.0.0.1])
 by localhost (mail.saout.de [127.0.0.1]) (amavisd-new, port 10024)
 with ESMTP id xy4zgNW7lo5E for <dm-crypt@saout.de>;
 Wed, 11 Dec 2013 20:16:09 +0100 (CET)
Received: from moutng.kundenserver.de (moutng.kundenserver.de [212.227.17.9])
 (using TLSv1 with cipher RC4-SHA (128/128 bits))
 (No client certificate requested)
 by mail.saout.de (Postfix) with ESMTPS
 for <dm-crypt@saout.de>; Wed, 11 Dec 2013 20:16:09 +0100 (CET)
Date: Wed, 11 Dec 2013 20:16:07 +0100
From: Heinz Diehl <htd@fancy-poultry.org>
Message-ID: <20131211191607.GA9082@fancy-poultry.org>
References: <52A8B602.4030303@riseup.net>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <52A8B602.4030303@riseup.net>
Subject: Re: [dm-crypt] Possibility for safe Luks partition delete
 functionality
List-Id: <dm-crypt.saout.de>
List-Unsubscribe: <http://www.saout.de/mailman/options/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=unsubscribe>
List-Archive: <http://www.saout.de/pipermail/dm-crypt/>
List-Post: <mailto:dm-crypt@saout.de>
List-Help: <mailto:dm-crypt-request@saout.de?subject=help>
List-Subscribe: <http://www.saout.de/mailman/listinfo/dm-crypt>,
 <mailto:dm-crypt-request@saout.de?subject=subscribe>
To: dm-crypt@saout.de

On 11.12.2013, tada wrote: 

> I was wondering if it is possible to add something like shred or wipe
> functionality for Luks devices, call it luksWipe, to safely delete the
> luks header

You can do that easily by running dd against the first MB's of the
respective partition..

dd if=/dev/zero of=/dev/sdaX