From owner-freebsd-hackers@FreeBSD.ORG Sat Jun 5 18:08:31 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E93FF16A4CE for ; Sat, 5 Jun 2004 18:08:31 -0700 (PDT) Received: from web80106.mail.yahoo.com (web80106.mail.yahoo.com [66.163.169.79]) by mx1.FreeBSD.org (Postfix) with SMTP id BF0FE43D1F for ; Sat, 5 Jun 2004 18:08:31 -0700 (PDT) (envelope-from evans.alan@sbcglobal.net) Message-ID: <20040606010831.85923.qmail@web80106.mail.yahoo.com> Received: from [66.124.150.210] by web80106.mail.yahoo.com via HTTP; Sat, 05 Jun 2004 18:08:31 PDT Date: Sat, 5 Jun 2004 18:08:31 -0700 (PDT) From: Alan Evans To: hackers@freebsd.org MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Subject: machine is unusable with panic: vrele: negative ref cnt X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Jun 2004 01:08:32 -0000 On boot I see the following on an IBM T30 laptop: Mounting root from ufs:/dev/ad0s1a WARNING: / was not properly dismounted ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 ad0: FAILURE - READ_MUL status=59 error=40 LBA=376639 panic: vrele: negative ref cnt syncing disks, buffers remaining... 9 9 9 9 9 9 9 9 9 9 \giving up on 9 buffers. And the same occurs on every reboot and the machine isn't usable anymore. I'd like to salvage the data that's in the hard disk. Any ideas on how ro recover data from the hard disk? The disk is only 4 months old. Thanks, Alan Evans