From owner-freebsd-current@FreeBSD.ORG Sun Nov 22 21:16:13 2009 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 8CC7A106566C for ; Sun, 22 Nov 2009 21:16:13 +0000 (UTC) (envelope-from john.marshall@riverwillow.com.au) Received: from mail1.riverwillow.net.au (mail1.riverwillow.net.au [203.58.93.36]) by mx1.freebsd.org (Postfix) with ESMTP id E01238FC17 for ; Sun, 22 Nov 2009 21:16:12 +0000 (UTC) Received: from rwpc12.mby.riverwillow.net.au (rwpc12.mby.riverwillow.net.au [172.25.24.168]) (authenticated bits=0) by mail1.riverwillow.net.au (8.14.3/8.14.3) with ESMTP id nAMLG3dI071005 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK); Mon, 23 Nov 2009 08:16:04 +1100 (AEDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=riverwillow.com.au; s=m1001; t=1258924564; bh=YCyFr4BlCyBcp5o/6rDCyjhhAOrVlTDz97oO73YU+Ms=; h=Date:From:To:Cc:Subject:Message-ID:References:Mime-Version: Content-Type:In-Reply-To; b=kPhg27atcnSNG9oSBZ6EoiQhxM6+awylQmma4PaFn39rURB7W135iNBi9dNGjWA10 LOGeCAIHtUelqdF1X0VCvrBqf2SrUZlrwXau3tp/LgVwUOTjTXgGaxIG3UwP4RRVYa hj7OQ+SzrD1qXUjsYr5z5IR5oPuKN7aA6LOqS0Yw= Received: from rwpc12.mby.riverwillow.net.au (localhost [127.0.0.1]) by rwpc12.mby.riverwillow.net.au (8.14.3/8.14.3) with ESMTP id nAMLG3PC001425; Mon, 23 Nov 2009 08:16:03 +1100 (AEDT) (envelope-from john.marshall@riverwillow.com.au) Received: (from john@localhost) by rwpc12.mby.riverwillow.net.au (8.14.3/8.14.3/Submit) id nAMLG1lU001424; Mon, 23 Nov 2009 08:16:01 +1100 (AEDT) (envelope-from john) Date: Mon, 23 Nov 2009 08:16:01 +1100 From: John Marshall To: Johan Hendriks Message-ID: <20091122211600.GA1094@rwpc12.mby.riverwillow.net.au> Mail-Followup-To: Johan Hendriks , freebsd-current@freebsd.org References: <20091121120754.GA30495@rwpc12.mby.riverwillow.net.au> <57200BF94E69E54880C9BB1AF714BBCBA5722F@w2003s01.double-l.local> Mime-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="RnlQjJ0d97Da+TV1" Content-Disposition: inline In-Reply-To: <57200BF94E69E54880C9BB1AF714BBCBA5722F@w2003s01.double-l.local> User-Agent: Mutt/1.4.2.3i OpenPGP: id=A29A84A2; url=http://pki.riverwillow.net.au/pgp/johnmarshall.asc Cc: freebsd-current@freebsd.org Subject: Re: 8.0 can't find/read label on da3 (7.2 OK) X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 22 Nov 2009 21:16:13 -0000 --RnlQjJ0d97Da+TV1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Sat, 21 Nov 2009, 20:14 +0100, Johan Hendriks wrote: > >If I boot 7.2-RELEASE from a live CD, bsdlabel happily reads the /da3s1 > label, I can fsck the da3s1d UFS filesystem, >and I can mount the > filesystem. If I boot 8.0, I lose the disc again. >=20 > This is probably a dangerous dedicated disk made on 7.x >=20 > I had this issue also and some member of the list gave me this hint: >=20 > !!!!!!!!!!!!!!DO MAKE A BACKUP OF YOUR DATA BEFORE DOING THIS FROM YOUR > 7.2 INSTALL !!!!!!!!!!!!!!!!!!! >=20 >=20 > Is your disk in "dangerously dedicated" mode? >=20 > If yes, this is what I did (advised by marcel@) >=20 > dd if=3D/dev/zero of=3D/dev/ad1 oseek=3D1 bs=3D512 count=3D1 >=20 > where /dev/ad1 is my device. You should see some messages from > GEOM_LABEL removing and assigning new labels. Thank you Johan, Yes, this disc was partitioned in "dedicated" mode. The above recipe solved my problem. It may be a good idea for somebody knowledgeable in this field to give attention to the "Dedicated Mode" Section 18.3.2.2 of the Handbook if this mode now unsupported. --=20 John Marshall --RnlQjJ0d97Da+TV1 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.13 (FreeBSD) iEYEARECAAYFAksJqhAACgkQw/tAaKKahKIfkACglNJsm1zy5bBWIE+MDjFFD7N/ r5kAn1qMkt5z1Iy5tb8gBDXnhUQILG/a =CE+d -----END PGP SIGNATURE----- --RnlQjJ0d97Da+TV1--