From owner-freebsd-questions@FreeBSD.ORG  Mon Sep 10 03:00:22 2012
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 3A32C106566B
	for <questions@freebsd.org>; Mon, 10 Sep 2012 03:00:22 +0000 (UTC)
	(envelope-from wblock@wonkity.com)
Received: from wonkity.com (wonkity.com [67.158.26.137])
	by mx1.freebsd.org (Postfix) with ESMTP id E89878FC14
	for <questions@freebsd.org>; Mon, 10 Sep 2012 03:00:21 +0000 (UTC)
Received: from wonkity.com (localhost [127.0.0.1])
	by wonkity.com (8.14.5/8.14.5) with ESMTP id q8A30LHu001253;
	Sun, 9 Sep 2012 21:00:21 -0600 (MDT)
	(envelope-from wblock@wonkity.com)
Received: from localhost (wblock@localhost)
	by wonkity.com (8.14.5/8.14.5/Submit) with ESMTP id q8A30LP7001250;
	Sun, 9 Sep 2012 21:00:21 -0600 (MDT)
	(envelope-from wblock@wonkity.com)
Date: Sun, 9 Sep 2012 21:00:21 -0600 (MDT)
From: Warren Block <wblock@wonkity.com>
To: Kevin Oberman <kob6558@gmail.com>
In-Reply-To: <CAN6yY1tp4TbbnVuGzPxCNgJXfb5bo2cyQ4sDDijrsD9KYi9esQ@mail.gmail.com>
Message-ID: <alpine.BSF.2.00.1209092058390.1143@wonkity.com>
References: <CAN6yY1vRdXMZVXNzofjjCzjotB1hALAPXMvB1MgV9duAf81LWg@mail.gmail.com>
	<alpine.BSF.2.00.1209091934230.59524@wonkity.com>
	<alpine.BSF.2.00.1209091948480.59524@wonkity.com>
	<CAN6yY1tp4TbbnVuGzPxCNgJXfb5bo2cyQ4sDDijrsD9KYi9esQ@mail.gmail.com>
User-Agent: Alpine 2.00 (BSF 1167 2008-08-23)
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.7
	(wonkity.com [127.0.0.1]); Sun, 09 Sep 2012 21:00:21 -0600 (MDT)
Cc: questions@freebsd.org
Subject: Re: Removing UFS label from root
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: Mon, 10 Sep 2012 03:00:22 -0000

On Sun, 9 Sep 2012, Kevin Oberman wrote:

> On Sun, Sep 9, 2012 at 6:49 PM, Warren Block <wblock@wonkity.com> wrote:
>> On Sun, 9 Sep 2012, Warren Block wrote:
>>
>>> On Sun, 9 Sep 2012, Kevin Oberman wrote:
>>>
>>>> I added a label to my root fs some time ago. I really prefer the gpt
>>>> label and I have added it, but I can't figure out how to remove the
>>>> ufs label.
>>>>
>>>> I boot single user and run 'tunefs -L "" /dev/ada1p2' but I get an
>>>> "unable to write superblock" error. This is before mounting the drive
>>>> RW, but it is, of course, mounted RO.
>>>
>>>
>>> This worked in a VM when I tested it just now.  Maybe running fsck on that
>>> filesystem first will help.
>
> Already tried that.
>
> I know I was able to label it originally, so it does seem like
> something must have changed, but I don't know what. I did use gpart to
> expand my /usr partition and then used growfs to expand the FS, but I
> did nothing to root and I was able to remove the labels on all of the
> other partitions.

Might there be a duplicate filesystem label of "root" on ada0 or another 
disk?