Date: Mon, 05 Nov 2001 14:53:18 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: "Kenneth D. Merry" <ken@kdm.org> Cc: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org, Joerg Wunsch <j@uriah.heep.sax.de> Subject: Re: cvs commit: src/sys/boot/i386/cdboot Makefile cdboot.s Message-ID: <XFMail.011105145318.jhb@FreeBSD.org> In-Reply-To: <20011105154810.A21812@panzer.kdm.org>
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On 05-Nov-01 Kenneth D. Merry wrote: > On Mon, Nov 05, 2001 at 14:36:54 -0800, John Baldwin wrote: >> On 05-Nov-01 Joerg Wunsch wrote: >> > As John Baldwin wrote: >> > >> >> This is a new CD bootstrap utility designed to replace cdldr. >> >> According to the El Torito standard for CD booting, a CD may boot >> >> in "No emulation" mode without using a floppy image. >> > >> > I once wrote such a bootstrap, or rather: i tried. None of the >> > available BIOSes by that time actually supported no emulation >> > booting... Do you know whether the situation has improved drastically >> > since? (You can still find the old traces in >> > /home/ncvs/src/sys/i386/cdboot, but probably only the later emulation >> > boot version. By that time, i wrote all of this for Plutotech. But >> > Ken later told me that they gave up that route.) >> >> It was require as part of the NT4 logo program I believe. That is, in order >> to >> get a 'Designed for Windows NT' sticker, your BIOS had to be able to do >> this. >> I assume it applies for Win2k Professional as well. The test machine I've >> been >> using is a rather old Dual PPro 200. > > The code Joerg wrote was done in mid-1997, and IIRC, it would only work > properly with version 1.23 or maybe 1.25 of the Adaptec 2940UW SCSI BIOS. > The other BIOS versions didn't do El Torito right at that point. This machine is using an ATA CD-ROM with a TYN TITAN-PRO V5.01 5/8/98 BIOS. If the machine can boot off of the NT CD, it will boot cdboot. -- 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 cvs-all" in the body of the message
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