From owner-freebsd-hackers Mon Jul 8 17:33:39 2002 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 45D6237B400 for ; Mon, 8 Jul 2002 17:33:36 -0700 (PDT) Received: from srv1.cosmo-project.de (srv1.cosmo-project.de [213.83.6.106]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2577643E4A for ; Mon, 8 Jul 2002 17:33:35 -0700 (PDT) (envelope-from ticso@cicely5.cicely.de) Received: from cicely5.cicely.de (cicely5.cicely.de [IPv6:3ffe:400:8d0:301:200:92ff:fe9b:20e7]) (authenticated bits=0) by srv1.cosmo-project.de (8.12.3/8.12.3) with ESMTP id g690XGMa048940 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=OK); Tue, 9 Jul 2002 02:33:20 +0200 (CEST) (envelope-from ticso@cicely5.cicely.de) Received: from cicely5.cicely.de (localhost [IPv6:::1]) by cicely5.cicely.de (8.12.1/8.12.1) with ESMTP id g690XFFJ006393 (version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO); Tue, 9 Jul 2002 02:33:15 +0200 (CEST)?g (envelope-from ticso@cicely5.cicely.de) Received: (from ticso@localhost) by cicely5.cicely.de (8.12.1/8.12.1/Submit) id g690XEgj006392; Tue, 9 Jul 2002 02:33:14 +0200 (CEST)?g (envelope-from ticso) Date: Tue, 9 Jul 2002 02:33:14 +0200 From: Bernd Walter To: Matthew Dillon Cc: Bernd Walter , Julian Elischer , Terry Lambert , Luigi Rizzo , hackers@FreeBSD.ORG Subject: Re: offtopic: low level format of IDE drive. Message-ID: <20020709003313.GO94279@cicely5.cicely.de> Reply-To: ticso@cicely.de References: <3D2A06A9.2F3CB99C@mindspring.com> <20020708221804.GN94279@cicely5.cicely.de> <200207082340.g68Ne4uH048135@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <200207082340.g68Ne4uH048135@apollo.backplane.com> X-Operating-System: FreeBSD cicely5.cicely.de 5.0-CURRENT i386 User-Agent: Mutt/1.5.1i Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Mon, Jul 08, 2002 at 04:40:04PM -0700, Matthew Dillon wrote: > > :> > Julian got struck by lightning; perhaps he will now stick to disks > :> > with built-in lightning rods (e.g. not succeptible to this failure), > :> > e.g. SCSI. > :> > :> This is an urban ledgend.. > : > :No - it's SCSI Specs. > :A SCSI Disk is required to savely finish the started sector even > :on powerloss. > :If all drives fullfill this requirement is another story. > : > :-- > :B.Walter COSMO-Project http://www.cosmo-project.de > > No, it's an urban legend. Someone actually buttonholed a Seagate > engineer a couple of years back and he said with absolute certainty > that a Seagate drive would lose up to two sectors, but not more > then that. After searching I've found the text I remembered in a german book describing SCSI :( But I have not found it in the ansi docs. Seems like I was just wrong and this is indeed a legend. Sorry for the missleading statement. > I've had direct experience with this. Seagate drives will indeed lose > up to two sectors if you are writing during a power loss... and this > is *GOOD* for the industry. Quantum drives (more direct experience > on my part) have been known to lose whole tracks and even multiple > tracks. Not loosing unrelated data realy is a big difference. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message