From owner-freebsd-stable Fri Jun 18 0:53:40 1999 Delivered-To: freebsd-stable@freebsd.org Received: from gndrsh.aac.dev.com (GndRsh.aac.dev.com [198.145.92.4]) by hub.freebsd.org (Postfix) with ESMTP id 7DA8714FF9 for ; Fri, 18 Jun 1999 00:53:30 -0700 (PDT) (envelope-from rgrimes@gndrsh.aac.dev.com) Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.9.3/8.9.3) id AAA62319; Fri, 18 Jun 1999 00:49:23 -0700 (PDT) (envelope-from rgrimes) From: "Rodney W. Grimes" Message-Id: <199906180749.AAA62319@gndrsh.aac.dev.com> Subject: Re: / not properly unmounted ? In-Reply-To: from Dag-Erling Smorgrav at "Jun 18, 1999 09:31:05 am" To: des@flood.ping.uio.no (Dag-Erling Smorgrav) Date: Fri, 18 Jun 1999 07:49:23 +0000 (GMT) Cc: chris@ns1.aepnet.com (chris), bright@rush.net (Alfred Perlstein), chad@DCFinc.com (Chad R. Larson), mike@smith.net.au (Mike Smith), jedgar@fxp.org, sec@42.org, freebsd-stable@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > chris writes: > > hehe, put the hard drives on their own separate power supply, and turn > > them off manually after the system powers itself down.. > > ...which totally ruins the point with ATX auto-poweroff. Any computer modern enough to be doing ATX auto-poweroff should have modern enough hard drives that even a write behind cache is not a problem. Relize it was over 10 years ago that the spindle motor enertia was found to be enough to use the motor as a generator for the period you need to keep the drive running after power has been cut to write back the cache data. Can anyone show me a drive made in the last 5 years that fails to properly write it cache data on DC power loss? If so I'll show you a design flaw... one I know first hand that there is no good reason for. -- Rod Grimes - KD7CAX - (RWG25) rgrimes@gndrsh.dnsmgr.net To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message