From owner-freebsd-questions Tue Sep 5 21:42:23 2000 Delivered-To: freebsd-questions@freebsd.org Received: from comp04.prc.uic.edu (comp04.prc.uic.edu [128.248.230.104]) by hub.freebsd.org (Postfix) with SMTP id 10AB037B424 for ; Tue, 5 Sep 2000 21:42:21 -0700 (PDT) Received: (qmail 49188 invoked by uid 1000); 6 Sep 2000 04:42:42 -0000 Date: Tue, 5 Sep 2000 23:42:42 -0500 From: Lucas Bergman To: "Christopher W. Aiken" Cc: freebsd-questions@freebsd.org Subject: Re: FreeBSD 4.1 Dual Boot Problems Message-ID: <20000905234242.B49156@comp04.prc.uic.edu> Reply-To: iceberg@pobox.com References: Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: ; from cwaiken@telerama.com on Sun, Sep 03, 2000 at 08:31:53PM -0400 Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > I can not boot W98 or FreeBSD. I tried to re-install 4.1 over and > over and over but no matter what I tried I could not get 4.1 to > write the boot loader to the mbr. [snip] As I expected FreeBSD 4.0 > did indeed install the multiple O/S boot loader. This time when I > installed 4.1 I told it NOT to install a boot loader and, when the > install was finished, I was able to boot W98 or FreeBSD with the 4.0 > boot loader program. > > What is wrong with 4.1 that it will not install the bootloader > program to the mbr? Is this happening to anyone else? I didn't have any trouble. But, then again, somebody else may have. > Can I boot from the "official" CD's that I got from Walnut Creek? Yes, with a sufficiently new computer. > How? It's an option in the BIOS/CMOS setup. Wherever you would go to, say, make the hard drive boot first instead of the floppy drive, there should be an option to boot from the ATAPI CD-ROM first. This only exists on computers younger than about two or three years. > If I can boot from the CD's, can I force the the re-write of the > multiple O/S boot loader to be written to the mbr? Yes. > How? Boot from the first CD. Then choose the FIXIT option from sysinstall. Insert the second CD when it asks, and jump over to the fixit shell with -. From the shell, mount your FreeBSD drive # mount /dev/ad0s2 /mnt or whatever. Then, you can refresh the MBR with # chroot /mnt # mount -a # /usr/sbin/boot0cfg -Bv ad0 Of course, check boot0cfg(8) for details. The `mount -a' step is, of course, unnecessary if your /usr is on the same partition as /. Lucas -- S. Lucas Bergman Northwestern University Mathematics Department PGP Public Key (0xC0C73619): http://pobox.com/~iceberg/pgpkey.html To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message