From owner-freebsd-hackers@FreeBSD.ORG Sun Mar 14 04:04:37 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 C475B16A4CF for ; Sun, 14 Mar 2004 04:04:37 -0800 (PST) Received: from www.kukulies.org (www.kukulies.org [213.146.112.180]) by mx1.FreeBSD.org (Postfix) with ESMTP id DC47843D39 for ; Sun, 14 Mar 2004 04:04:36 -0800 (PST) (envelope-from kuku@www.kukulies.org) Received: from www.kukulies.org (localhost [127.0.0.1]) by www.kukulies.org (8.12.10/8.12.10) with ESMTP id i2EC4C7Z016844; Sun, 14 Mar 2004 13:04:12 +0100 (CET) (envelope-from kuku@www.kukulies.org) Received: (from kuku@localhost) by www.kukulies.org (8.12.10/8.12.10/Submit) id i2EC4BJP016843; Sun, 14 Mar 2004 13:04:11 +0100 (CET) (envelope-from kuku) Date: Sun, 14 Mar 2004 13:04:11 +0100 From: "Christoph P. Kukulies" To: =?iso-8859-1?Q?S=F8ren?= Schmidt Message-ID: <20040314120411.GA16600@gilberto.physik.rwth-aachen.de> References: <20040311153709.AD00216A4D6@hub.freebsd.org> <20040311174030.GB8190@tikitechnologies.com> <20040314104717.GA16158@gilberto.physik.rwth-aachen.de> <4054410E.3000401@DeepCore.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <4054410E.3000401@DeepCore.dk> User-Agent: Mutt/1.4.1i cc: freebsd-hackers@freebsd.org Subject: Re: off topic - disk crash 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, 14 Mar 2004 12:04:37 -0000 On Sun, Mar 14, 2004 at 12:25:02PM +0100, Søren Schmidt wrote: > Christoph P. Kukulies wrote: > > >Thanks for all the helpful tips so far. It is a DLTA 307045 (3.5") > >Don't know whether this is a 75GXP. > > It is one of the dreaded models experience shows that all models after > this has some kind of problems, no wonder they sold out :) > > >I'm getting either these: > > > >ad2: TIMEOUT - READ_DMA retrying (2 retries left) LBA=30583 > > > >Which don't stop the dd process. > > > >And these, > > > >ad2: FAILURE - READ_DMA status=51 > >error=40 LBA=9156 > > > >leading to termination. > > > >Also the transfer rate is terribly slow: (80 KB/s) > > > >I was able to save 18 MB (of 46 GB) (not much so far) > > > >Any other suggestions? > > Use the noerror and sync flags to dd, that will get past errors and put > in NULL sectors for those you cant read. However it will take a looong > time and probably tear off the sorry rests of your magnetic coating on > the platters :( It is now dumping and I'm at 2.7 GB meanwhile. No more errors since the last one at LBA=670000 . Are these LBS identical to the block #? Maybe I'll give it another try (when this pass is through) and dump from the beginning. I'm about to get me a second identical model and maybe I then can dd the whole image including partition table so that I will not have to scan the disk for the start of the filesystems. Some time ago I wrote a little program to scan a disk for the start of a FS. Unfortunately that program is also on the crashed disk :-O -- Chris Christoph P. U. Kukulies kuku_at_physik.rwth-aachen.de