From owner-freebsd-questions@FreeBSD.ORG Mon Sep 10 01:03:26 2012 Return-Path: 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 BEAB91065675 for ; Mon, 10 Sep 2012 01:03:26 +0000 (UTC) (envelope-from erichfreebsdlist@ovitrap.com) Received: from alogreentechnologies.com (alogreentechnologies.com [67.212.224.110]) by mx1.freebsd.org (Postfix) with ESMTP id 6F9058FC14 for ; Mon, 10 Sep 2012 01:03:26 +0000 (UTC) Received: from X220.ovitrap.com ([122.129.201.5]) (authenticated bits=0) by alogreentechnologies.com (8.13.1/8.13.1) with ESMTP id q8A13N8h028497; Sun, 9 Sep 2012 19:03:24 -0600 Date: Mon, 10 Sep 2012 08:03:22 +0700 From: Erich Dollansky To: Kevin Oberman Message-ID: <20120910080322.14343605@X220.ovitrap.com> In-Reply-To: References: X-Mailer: Claws Mail 3.8.0 (GTK+ 2.24.6; amd64-portbld-freebsd10.0) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit 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 List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 10 Sep 2012 01:03:26 -0000 Hi, On Sun, 9 Sep 2012 17:47:43 -0700 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. I tried setting the "allow > foot-shooting" debug flag, but it did not help. > > Is my only hope to boot a live system? (I have no CD, so I guess I > could try a a thumb drive.) as media size is growing, I started to make now every backup copy bootable. Big devices get then the full FreeBSD system. Erich