Date: Tue, 31 Jul 2001 12:50:10 -0700 (PDT) From: John Baldwin <jhb@FreeBSD.org> To: cvs-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/boot/i386/boot2 Makefile boot1.s boot2.c Message-ID: <200107311950.f6VJoAh19115@freefall.freebsd.org>
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jhb 2001/07/31 12:50:10 PDT
Modified files:
sys/boot/i386/boot2 Makefile boot1.s boot2.c
Log:
Add in a hack to support IBM "El Torito" CD-ROM booting BIOS's which expect
the first sector of the emulated floppy to contain a valid MS-DOS BPB that
it can modify. Since boot1 is the first sector of boot.flp, this resulted
in the BIOS overwriting part of boot1: specifically the function used to
read in sectors from the disk.
Submitted by: Mark Peek <mark@whistle.com>
Submitted by: Doug Ambrisko <ambrisko@ambrisko.com>
PR: i386/26382
Obtained from: NetBSD, OpenBSD (the example BPB)
MFC after: 1 month
Revision Changes Path
1.22 +11 -2 src/sys/boot/i386/boot2/Makefile
1.16 +35 -2 src/sys/boot/i386/boot2/boot1.s
1.32 +3 -2 src/sys/boot/i386/boot2/boot2.c
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