From owner-freebsd-questions Wed May 26 14:48:36 1999 Delivered-To: freebsd-questions@freebsd.org Received: from spork.cs.unm.edu (spork.cs.unm.edu [198.59.151.21]) by hub.freebsd.org (Postfix) with ESMTP id 58FA815665 for ; Wed, 26 May 1999 14:48:31 -0700 (PDT) (envelope-from colinj@cs.unm.edu) Received: from waimea.cs.unm.edu ([198.59.151.33]) by spork.cs.unm.edu with esmtp (Exim 2.12 #3) id 10mlXK-0000dU-00 for freebsd-questions@FreeBSD.ORG; Wed, 26 May 1999 15:48:30 -0600 Received: from localhost (colinj@localhost) by waimea.cs.unm.edu (980427.SGI.8.8.8/8.8.8) with ESMTP id PAA11304 for ; Wed, 26 May 1999 15:46:34 -0600 (MDT) (envelope-from colinj@waimea.cs.unm.edu) Date: Wed, 26 May 1999 15:46:34 -0600 From: Colin Eric Johnson To: freebsd-questions@FreeBSD.ORG Subject: Re: CD Images and Bootable CDs In-Reply-To: <199905140358.XAA14331@cc942873-a.ewndsr1.nj.home.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Thu, 13 May 1999, Crist J. Clark wrote: > Colin Eric Johnson wrote, > > Question number two. > > > > I'd like to be able to make a CD image of the root partition on a FreeBSD > > box such that it is a bootable CD so that if the disk were damaged, > > corrupted or comprimised I could boot the machine with known safe media. > > I've been looking at the tools like mkhybrid and mkisofs > > mkisofs should be fine. No need for Joliet extensions for a FreeBSD > system disk. > > > to produce CD > > images from directories, what I am not sure about is what to use for the > > bootable image. What I would like is something with a bit more space then > > a boot floppy. I'm thinking that with a bootable CD with a root file > > system on it I could have enough tools to bring a machine on line. > > > > thoughts? > > You can easily fit the root partition and the basic usr on a > CD. Using one for a fixit or boot disk seems perfectly > reasonable... to a point. You will not have a writable /tmp, but that > is not a show stopper. However, I'm not at all sure how mounting other > filesystems would work on a read-only directory on a CD. If you could > not mount other filesystems, it would be pretty much useless. You > could boot fine and run commands, but never be able to actually fix > anything. The mounting doesn't seem to be a problem, I can make that work. What I'm interested in is a guide to make a boot image to place on the CD that uses the kernel that I build for the machine and not the generic kernel. Colin E. Johnson | colinj@unm.edu | http://www.unm.edu/~colinj/ A complete breakfast with juice, toast and milk To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message