From owner-freebsd-questions@FreeBSD.ORG Tue Oct 27 20:05:34 2009 Return-Path: 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 0F3371065676 for ; Tue, 27 Oct 2009 20:05:34 +0000 (UTC) (envelope-from michaelgrunewald@yahoo.fr) Received: from smtp5.netcologne.de (smtp5.netcologne.de [194.8.194.25]) by mx1.freebsd.org (Postfix) with ESMTP id C86E08FC1B for ; Tue, 27 Oct 2009 20:05:33 +0000 (UTC) Received: from llea.celt.neu (xdsl-84-44-230-93.netcologne.de [84.44.230.93]) by smtp5.netcologne.de (Postfix) with ESMTP id 6C40840D30C; Tue, 27 Oct 2009 21:05:32 +0100 (CET) Message-ID: <4AE75293.5020603@yahoo.fr> Date: Tue, 27 Oct 2009 21:05:39 +0100 From: =?ISO-8859-1?Q?Micha=EBl_Gr=FCnewald?= User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.8.1.23) Gecko/20090919 SeaMonkey/1.1.18 MIME-Version: 1.0 To: Polytropon References: <20091027150519.dcee178a.freebsd@edvax.de> In-Reply-To: <20091027150519.dcee178a.freebsd@edvax.de> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Cc: freebsd questions general Subject: Re: Bad sectors: how bad can it be X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Oct 2009 20:05:34 -0000 Many thanks to the contributors of the list for their input on this question! I always got quick and detailed answer to my questions on this list, which is very appreciable in this time of (small) trouble. (I feel sorry for the very poor english I demonstrated in the message I wrote this morning: I was in a hurry!) Polytropon wrote: > On Tue, 27 Oct 2009 08:31:18 +0100, Grünewald Michaël wrote: >> Starting the machine by other means, I found that the hard-drive is >> installed on has bad sectors. I am looking for advices on how to >> recover from this, if possible. > > If there's data on the disk you want to get back, first > make a dd copy of the drive or the partition in question. > Use an accurately working disk as the target. I have backups of the data contained in the broken, so the data on this disc are not a concern. I have however a question: How do I verify that a hard-drive is accurately working if its firmware will hide the bad sectors as long as possible? >> Basically the question is: shall I discard my hard-drive with bad- >> sectors, or can I continue using it? > > Discard it. Hard disks are cheap today, and bad sectors may > have the habit to multiply. Don't take that risk. As the other contributors join their voices to yours, I will replace the faulty disk ASAP. -- Thank you a lot, Michaël