From owner-freebsd-questions@FreeBSD.ORG Wed Dec 3 00:06:12 2003 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id DA5AD16A4CE for ; Wed, 3 Dec 2003 00:06:12 -0800 (PST) Received: from web41110.mail.yahoo.com (web41110.mail.yahoo.com [66.218.93.26]) by mx1.FreeBSD.org (Postfix) with SMTP id 10CB943FCB for ; Wed, 3 Dec 2003 00:06:12 -0800 (PST) (envelope-from scott@sremick.net) Message-ID: <20031203080612.54273.qmail@web41110.mail.yahoo.com> Received: from [24.48.174.124] by web41110.mail.yahoo.com via HTTP; Wed, 03 Dec 2003 00:06:12 PST X-RocketYMMF: siremick Date: Wed, 3 Dec 2003 00:06:12 -0800 (PST) From: "Scott I. Remick" To: FreeBSD MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: "Cannot find file system superblock" error - how to recover? X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: scott@sremick.net List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 03 Dec 2003 08:06:13 -0000 Running 5.1-REL on a system w/ 2 drives. Was saving a file to 2nd drive (mounts as /data) and system suddenly froze then rebooted. Never good. Fsck barfed on startup telling me I had to run it manually. The error I'm stuck with is: /dev/ad6s1c Cannot find file system superblock /dev/ad6s1c: NOT LABELED AS A BSD FILE SYSTEM Searching on this error hasn't been very productive. Some people talk about a "LOOK FOR ALTERNATE SUPERBLOCKS?" question that I'm not getting when I run fsck. There's also mention of an undocumented -b option to fsck for fixing this. Then there's some scary manual method using dd: dd if=/dev/ad6s1c skip=32 of=/dev/ad6s1c seek=16 bs=512 count=16 But before I do that I definitely want confirmation. Please tell me there's hope for this drive...this Windows PC makes me feel dirty. Thanks in advance. :) ===== Scott I. Remick --==-- ICQ: 450152 Save the internet - Use a Mozilla-based browser: http://vtbsd.net/mozilla/ FreeBSD: Because making unix user-friendly is easier than debugging Windows. http://vtbsd.net/freebsd/ "Voici mon secret. Il est tres simple: on ne voit bien qu'avec le coeur. L'essentiel est invisible pour les yeux." Q: Because it reverses the logical flow of conversation. A: Why is putting a reply at the top of the message frowned upon?