From owner-freebsd-questions@FreeBSD.ORG  Thu Apr 22 12:10:37 2010
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 4AF031065670
	for <freebsd-questions@freebsd.org>;
	Thu, 22 Apr 2010 12:10:37 +0000 (UTC)
	(envelope-from a_best01@uni-muenster.de)
Received: from zivm-relay2.uni-muenster.de (ZIVM-RELAY2.UNI-MUENSTER.DE
	[128.176.192.13])
	by mx1.freebsd.org (Postfix) with ESMTP id CB0C38FC2E
	for <freebsd-questions@freebsd.org>;
	Thu, 22 Apr 2010 12:10:36 +0000 (UTC)
X-IronPort-AV: E=Sophos;i="4.52,256,1270418400"; d="scan'208";a="242710546"
Received: from zivmaildisp1.uni-muenster.de (HELO
	ZIVMAILUSER04.UNI-MUENSTER.DE) ([128.176.188.85])
	by zivm-relay2.uni-muenster.de with ESMTP; 22 Apr 2010 14:10:35 +0200
Received: by ZIVMAILUSER04.UNI-MUENSTER.DE (Postfix, from userid 149459)
	id 886421B07C3; Thu, 22 Apr 2010 14:10:35 +0200 (CEST)
Date: Thu, 22 Apr 2010 14:10:35 +0200 (CEST)
From: Alexander Best <alexbestms@wwu.de>
Sender: <a_best01@uni-muenster.de>
Organization: Westfaelische Wilhelms-Universitaet Muenster
To: <freebsd-questions@FreeBSD.org>
Message-ID: <permail-2010042212103580e26a0b00002482-a_best01@message-id.uni-muenster.de>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Cc: 
Subject: chrome os scrubbed my secondary GPT table :(
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: Thu, 22 Apr 2010 12:10:37 -0000

hi there,

i booted the chrome os live cd (i686-0.5.307) and played a bit with it. after
rebooting freebsd (HEAD) i got this warning:

GEOM: ada0: the secondary GPT table is corrupt or invalid.
GEOM: ada0: using the primary only -- recovery suggested.

it seems chrome os used the secondary GPT table of my hdd to store some data.
how can i recover the table? the primary table doesn't seem to have been
affected by chrome os.

i read that simply `dd`'ing the primary table onto the blocks where the
secondary table is located won't work and that gpart(8) is still missing a
recovery option (which gpt(8) had).

-- 
Alexander Best