Date: Thu, 17 Feb 2000 12:05:12 -0800 From: Mike Smith <msmith@freebsd.org> To: John Baldwin <jhb@FreeBSD.org> Cc: "David E. Cross" <crossd@cs.rpi.edu>, Gerald Abshez <gerald@manhattanprojects.com>, freebsd-current@FreeBSD.org Subject: Re: Thinkpad won't boot ISO image Message-ID: <200002172005.MAA00520@mass.cdrom.com> In-Reply-To: Your message of "Thu, 17 Feb 2000 14:28:15 EST." <200002171928.OAA64276@server.baldwin.cx>
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> > On 17-Feb-00 Mike Smith wrote: > >> > >> On 16-Feb-00 Mike Smith wrote: > >> >> This is a problem with the thinkpad BIOS that I have not had the time to be > >> >> able to track down. It would *appear* to be that the BIOS does not do > >> >> int 13 handling on boot cdroms, and the boot/loader makes much use of that > >> >> for loading the kernel and drivers. > >> > > >> > The problem with the Thinkpad BIOS is where it puts the emulated floppy > >> > image's disk number - it's not in the 'normal' place, and I don't exactly > >> > know how to deal with it cleanly. If someone were to lend me a thinkpad > >> > or look at this it would be easy to fix. > >> > >> Err, which place? The emulated device is always BIOS drive 0x00, aka the > >> first floppy drive when you are emulating a floppy. > > > > It's not, which is the "Thinkpad CDROM boot problem". The one report I > > recall put it on 0x87, but I don't have any concrete evidence to suggest > > that it's always there either. > > Gah. Then they need to learn how to read standards. It is passed in via %dl > at least? After David's response, I'm wondering whether the problem isn't that they _arent_ passing the value in via %dl, and we're just getting trash. Not sure how it is that boot1/2 are working though. -- \\ Give a man a fish, and you feed him for a day. \\ Mike Smith \\ Tell him he should learn how to fish himself, \\ msmith@freebsd.org \\ and he'll hate you for a lifetime. \\ msmith@cdrom.com To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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