Date: Thu, 18 Oct 2001 16:18:42 +0100 (BST) From: Thomas Dixon <thomas@vbc.net> To: John Baldwin <jhb@FreeBSD.ORG> Cc: Thomas Dixon <thomas@vbc.net>, hackers@FreeBSD.ORG Subject: RE: Problems with booting of CD-ROM (fwd) Message-ID: <Pine.BSF.4.10.10110181617470.394-100000@brunel.uk1.vbc.net> In-Reply-To: <XFMail.011016213459.jhb@FreeBSD.org>
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On Tue, 16 Oct 2001, John Baldwin wrote: > > On 17-Oct-01 Thomas Dixon wrote: > > > > > > On Tue, 16 Oct 2001, John Baldwin wrote: > > > >> > >> On 16-Oct-01 Thomas Dixon wrote: > >> > I'm trying to make a bootable CD using the cdboot program that come with > >> > freeBSD in /sys/i386/boot/cdboot. The computer I'm trying to do this on > >> > definately boots other CDs as it has booted several other CDs. However > >> > using a CD I've made using mkisofs and cdboot it gives the error; > >> > > >> > Your BIOS int 0x13 extensions seem to be disabled. > >> > It's impossible to boot a CD-ROM without them. > >> > (BIOS int 0x13 fn 0x4b01 yielded error 1) > >> > > >> > I'm using an Asus P5A motherboard, there appears to be no way to enable > >> > the int 0x13 extensions in the BIOS and there is nothing in the manual > >> > that refers to these. > >> > > >> > Any ideas why this error is coming up or how to fix it? > >> > >> Don't use cdboot or cdldr, they don't qutie work yet. :( > >> > >> Instead, make a floppy image and use that to boot. > >> > > I've tried this and I couldn't figure out the syntax for loader.rc to load > > the file system from the cd-rom, any ideas? > > You don't really load the filesystem from the CD-ROM as the loader can't read a > CD-ROM right now. Instead you use a memory filesystem on the floppy image and > use that to boostrap yourself so you can mount the CD. I have done this now and it loads the mfsroot.gz file, however I can't find any man pages or web pages that tell me how to create an mfsroot file. Any ideas on this? - Tom > > - Tom > > -- > > John Baldwin <jhb@FreeBSD.org> -- http://www.FreeBSD.org/~jhb/ > PGP Key: http://www.baldwin.cx/~john/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 > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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