From owner-freebsd-hackers@FreeBSD.ORG  Sun Mar 14 03:25:21 2004
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
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 B5D8B16A4CE
	for <freebsd-hackers@freebsd.org>;
	Sun, 14 Mar 2004 03:25:21 -0800 (PST)
Received: from spider.deepcore.dk
	(cpe.atm2-0-53484.0x50a6c9a6.abnxx9.customer.tele.dk [80.166.201.166])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 904FE43D41
	for <freebsd-hackers@freebsd.org>;
	Sun, 14 Mar 2004 03:25:20 -0800 (PST)	(envelope-from sos@DeepCore.dk)
Received: from DeepCore.dk (sos.deepcore.dk [194.192.25.130])
	by spider.deepcore.dk (8.12.11/8.12.10) with ESMTP id i2EBP2HI077487;
	Sun, 14 Mar 2004 12:25:17 +0100 (CET)
	(envelope-from sos@DeepCore.dk)
Message-ID: <4054410E.3000401@DeepCore.dk>
Date: Sun, 14 Mar 2004 12:25:02 +0100
From: =?ISO-8859-1?Q?S=F8ren_Schmidt?= <sos@DeepCore.dk>
User-Agent: Mozilla/5.0 (X11; U; FreeBSD i386; en-US;
	rv:1.6b) Gecko/20040126 Thunderbird/0.4
X-Accept-Language: en-us, en
MIME-Version: 1.0
To: "Christoph P. Kukulies" <kuku@kukulies.org>
References: <20040311153709.AD00216A4D6@hub.freebsd.org>
	<20040311174030.GB8190@tikitechnologies.com> <xzpk71qaz93.fsf@dwp.des.no>
	<20040314104717.GA16158@gilberto.physik.rwth-aachen.de>
In-Reply-To: <20040314104717.GA16158@gilberto.physik.rwth-aachen.de>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 8bit
X-mail-scanned: by DeepCore Virus & Spam killer v1.4
X-Mailman-Approved-At: Sun, 14 Mar 2004 05:57:27 -0800
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
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sun, 14 Mar 2004 11:25:21 -0000

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<READY, DSC, ERROR> error=40<UNCORRECTABLE> 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 :(

-Søren