Date: Mon, 10 Apr 2000 17:36:05 -0400 (EDT) From: John Baldwin <jhb@FreeBSD.org> To: Warner Losh <imp@village.org> Cc: hackers@FreeBSD.org Subject: RE: How hard would it be... Message-ID: <200004102136.RAA12324@server.baldwin.cx> In-Reply-To: <200004100128.TAA15168@harmony.village.org>
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On 10-Apr-00 Warner Losh wrote: > ... to get FreeBSD to boot off a BSD partition that wasn't labeled as > 0xa5? I'm looking for a way to create a disk that a certain picky > BIOS will like and boot off of, and I think I have to create it with a > certain ID and then it will be happy. I suspect that it involves > hacking the boot blocks, the boot loader and the kernel's idea of the > BSD partition number in disk*subr.c. Are there other things that are > needed? I may be barking up the wrong tree in trying to get around > this BIOS's pickiness, but I thought I'd at least ask. > > Yes, this is for a well-known, cheap internet device, which shall > remain nameless. I've already OPENed mine up. a real lookER. Heh. Well, I can't speak for the kernel side of things, but for the rest of the boot strap you would need to change these lines in these files: /sys/boot/i386/boot2/boot1.s: .set PRT_BSD,0xa5 # Partition type /usr/include/sys/disklabel.h: #define DOSPTYP_386BSD 0xa5 /* 386BSD partition type */ Once you've done that, go into /sys/boot/i386 and just do a make. If you update /sys/sys/disklabel.h you might be able to compile a new kernel and be able to mount, etc., but I'm not sure about that part. > Warner -- John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ PGP Key: http://www.cslab.vt.edu/~jobaldwi/pgpkey.asc "Power Users Use the Power to Serve!" - http://www.FreeBSD.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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