From owner-freebsd-hackers Sat Jan 4 23:14: 0 2003 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 EE0B537B401 for ; Sat, 4 Jan 2003 23:13:58 -0800 (PST) Received: from harmony.village.org (rover.bsdimp.com [204.144.255.66]) by mx1.FreeBSD.org (Postfix) with ESMTP id 3ED4443E4A for ; Sat, 4 Jan 2003 23:13:58 -0800 (PST) (envelope-from imp@bsdimp.com) Received: from localhost (warner@rover2.village.org [10.0.0.1]) by harmony.village.org (8.12.6/8.12.3) with ESMTP id h057Do1e051335; Sun, 5 Jan 2003 00:13:57 -0700 (MST) (envelope-from imp@bsdimp.com) Date: Sun, 05 Jan 2003 00:12:55 -0700 (MST) Message-Id: <20030105.001255.53237870.imp@bsdimp.com> To: vadik-hackers@freebsd.vygo.net Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: freebsd running on a cdrom From: "M. Warner Losh" In-Reply-To: <20030105001014.GA76756@cs.huji.ac.il> References: <20030102220350.5971.qmail@web41013.mail.yahoo.com> <20030105001014.GA76756@cs.huji.ac.il> X-Mailer: Mew version 2.1 on Emacs 21.2 / Mule 5.0 (SAKAKI) Mime-Version: 1.0 Content-Type: Text/Plain; charset=us-ascii Content-Transfer-Encoding: 7bit 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 In message: <20030105001014.GA76756@cs.huji.ac.il> Vadim Vygonets writes: : Quoth Joe on Thu, Jan 02, 2003: : > I've been trying to get FreeBSD to run off a cdrom. Why, : > well longs story, the shot version is it needs to be able to be : > turned off and on like a lite switch. (I understand the on part : > will take longer, but the off is just hit the button). : : CD-ROM is not what I would call a reliable media. May I suggest : booting from the network (PXE) or booting from a hard disk and : mounting the partitions read-only? It is usually the case that solid-state media, properly configured, is more reliable. CF cards have a TrueIDE mode that allows them to be accessed as a disk on the IDE bus. Timing Solutions uses this technology in all its embedded systems and we've noticed a huge reduction in RMAs from the previous generation of systems with IDE hard disks in them. I'd suspect that cdrom drives will break more often than hard disks in harsh environments. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message