From owner-freebsd-current@FreeBSD.ORG  Wed Mar 31 01:57:50 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id F3EAE16A4CF
	for <current@freebsd.org>; Wed, 31 Mar 2004 01:57:49 -0800 (PST)
Received: from vault.redlinenetworks.com (mail.redlinenetworks.com
	[216.136.145.172])
	by mx1.FreeBSD.org (Postfix) with ESMTP id DFC6E43D2D
	for <current@freebsd.org>; Wed, 31 Mar 2004 01:57:49 -0800 (PST)
	(envelope-from scott@redlinenetworks.com)
Received: from redlinenetworks.com (melkor.redlinenetworks.com [192.168.0.8])
	i2V9vhCH003278;	Wed, 31 Mar 2004 01:57:44 -0800 (PST)
	(envelope-from scott@redlinenetworks.com)
Message-ID: <406A9692.4080501@redlinenetworks.com>
Date: Wed, 31 Mar 2004 01:59:46 -0800
From: Scott Sewall <scott@redlinenetworks.com>
Organization: Redline Networks, Inc.
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US;
	rv:1.4) Gecko/20030624 Netscape/7.1 (ax)
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: Steve Kargl <sgk@troutmask.apl.washington.edu>
References: <401B31DA.9000203@ciam.ru>
	<20040131170630.GA75298@troutmask.apl.washington.edu>
In-Reply-To: <20040131170630.GA75298@troutmask.apl.washington.edu>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
cc: Sergey Matveychuk <sem@ciam.ru>
cc: current@freebsd.org
Subject: Re: write on device
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 31 Mar 2004 09:57:50 -0000


Steve Kargl wrote:

>On Sat, Jan 31, 2004 at 07:40:58AM +0300, Sergey Matveychuk wrote:
>  
>
>>Hello.
>>
>>It's looks like I can't write on devices into boot area on 5.x?
>>Even when I'm root. Why?
>>I can't create a partition, can't change MBR (I'm working with grub).
>>
>>Is there a workaround?
>>    
>>
>
>This is becoming a FAQ.  The author of GEOM has given GEOM
>the useful feature of disabling writes to active devices.
>You can set the kern.geom.debugflags sysctl in /boot/loader.conf
>to 16 which allows footshooting.
>  
>
No need to modify loader.conf. You can simply execute the following command:

    sysctl -w kern.geom.debugflags=16

-- Scott