From owner-freebsd-questions@FreeBSD.ORG  Sun Dec  6 17:34:35 2009
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: freebsd-questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id D16951065692
	for <freebsd-questions@freebsd.org>;
	Sun,  6 Dec 2009 17:34:35 +0000 (UTC)
	(envelope-from mexas@bristol.ac.uk)
Received: from dirj.bris.ac.uk (dirj.bris.ac.uk [137.222.10.78])
	by mx1.freebsd.org (Postfix) with ESMTP id 90BE58FC0A
	for <freebsd-questions@freebsd.org>;
	Sun,  6 Dec 2009 17:34:35 +0000 (UTC)
Received: from seis.bris.ac.uk ([137.222.10.93])
	by dirj.bris.ac.uk with esmtp (Exim 4.69)
	(envelope-from <mexas@bristol.ac.uk>) id 1NHL0C-0001YK-F6
	for freebsd-questions@freebsd.org; Sun, 06 Dec 2009 17:34:34 +0000
Received: from mech-cluster241.men.bris.ac.uk ([137.222.187.241])
	by seis.bris.ac.uk with esmtp (Exim 4.67)
	(envelope-from <mexas@bristol.ac.uk>) id 1NHL0B-0004Lz-Ni
	for freebsd-questions@freebsd.org; Sun, 06 Dec 2009 17:34:32 +0000
Received: from mech-cluster241.men.bris.ac.uk (localhost [127.0.0.1])
	by mech-cluster241.men.bris.ac.uk (8.14.3/8.14.3) with ESMTP id
	nB6HYV5u070413
	for <freebsd-questions@freebsd.org>; Sun, 6 Dec 2009 17:34:31 GMT
	(envelope-from mexas@bristol.ac.uk)
Received: (from mexas@localhost)
	by mech-cluster241.men.bris.ac.uk (8.14.3/8.14.3/Submit) id
	nB6HYV64070412
	for freebsd-questions@freebsd.org; Sun, 6 Dec 2009 17:34:31 GMT
	(envelope-from mexas@bristol.ac.uk)
X-Authentication-Warning: mech-cluster241.men.bris.ac.uk: mexas set sender to
	mexas@bristol.ac.uk using -f
Date: Sun, 6 Dec 2009 17:34:31 +0000
From: Anton Shterenlikht <mexas@bristol.ac.uk>
To: freebsd-questions@freebsd.org
Message-ID: <20091206173431.GA70391@mech-cluster241.men.bris.ac.uk>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.5.20 (2009-06-14)
X-Spam-Score: -4.4
X-Spam-Level: ----
Subject: dd (to erase disk) from emergency holographic shell
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 06 Dec 2009 17:34:35 -0000

I need to erase all of my fbsd disk.
I booted the installation cd, launched
Emergency Holographic Shell, but
cannot find any command, except rm and pwd.

I'd like to erase my disk with dd if=/dev/null of=/dev/ad0

Please advise

many thanks
anton

-- 
Anton Shterenlikht
Room 2.6, Queen's Building
Mech Eng Dept
Bristol University
University Walk, Bristol BS8 1TR, UK
Tel: +44 (0)117 331 5944
Fax: +44 (0)117 929 4423