From owner-freebsd-hackers Sun Oct 29 17:52:01 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id RAA22926 for hackers-outgoing; Sun, 29 Oct 1995 17:52:01 -0800 Received: from genesis.atrad.adelaide.edu.au (genesis.atrad.adelaide.edu.au [129.127.96.120]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id RAA22921 for ; Sun, 29 Oct 1995 17:51:54 -0800 Received: from msmith@localhost by genesis.atrad.adelaide.edu.au (8.6.9/8.6.9) id MAA00367; Mon, 30 Oct 1995 12:18:30 +1030 From: Michael Smith Message-Id: <199510300148.MAA00367@genesis.atrad.adelaide.edu.au> Subject: Re: boot disk.... To: bde@zeta.org.au (Bruce Evans) Date: Mon, 30 Oct 1995 12:18:29 +1030 (CST) Cc: msmith@atrad.adelaide.edu.au, terry@lambert.org, hackers@freebsd.org, lenzi@cwbone.bsi.com.br In-Reply-To: <199510271940.FAA25718@godzilla.zeta.org.au> from "Bruce Evans" at Oct 28, 95 05:40:54 am Content-Type: text Content-Length: 1300 Sender: owner-hackers@freebsd.org Precedence: bulk Bruce Evans stands accused of saying: > > >Stage 2 boostrap ... > >... should perform MBR fixup to > >guarantee that the absolute offset field in the MBR matches the c/h/s > >values for the slice under the BIOS geometry. > > Only for its own benefit. Drivers don't want to know about yet another > translation. It's actually intended to remove the need for any driver to need to know about any translation. There are issues related to disks not covered by a BIOS, but from the point of view of the 'panic: can't mount root' problem experienced when an unwitting installer gets the geometry wrong. > >It should also be buildable > >as a DOS program, to allow it to work with Ontrack's Disk Mangler. The > > Nothing should require DOS utilitites to build. Nothing would. "It should be buildable as a DOS program"; in other words, it should fit into the fbsdboot tool, to cover all booting scenarios. > Bruce -- ]] Mike Smith, Software Engineer msmith@atrad.adelaide.edu.au [[ ]] Genesis Software genesis@atrad.adelaide.edu.au [[ ]] High-speed data acquisition and [[ ]] realtime instrument control (ph/fax) +61-8-267-3039 [[ ]] My car has "demand start" -Terry Lambert UNIX: live FreeBSD or die! [[