Date: Fri, 14 Sep 2001 14:00:27 -0700 From: Kent Stewart <kstewart@urx.com> To: John Baldwin <jhb@FreeBSD.org> Cc: freebsd-hackers@freebsd.org, roam@ringlet.net, msmith@freebsd.org, rnordier@FreeBSD.org Subject: Re: Does boot1 still have a > 1023 cyl limit? Message-ID: <3BA26FEB.D701D7EE@urx.com> References: <XFMail.010914135256.jhb@FreeBSD.org>
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John Baldwin wrote: > > On 14-Sep-01 Kent Stewart wrote: > > > > > > rnordier@FreeBSD.org wrote: > >> > >> Kent Stewart wrote: > >> > >> > Mike Smith wrote: > >> > > > >> > > > So.. if I read you right, booting correctly for > 1024 cylinders works > >> > > > if boot0 knows about it. Isn't boot0 the one in the MBR, not in the > >> > > > fbsd > >> > > > slice? Does this mean that boot1 and boot2 should work just fine if > >> > > > they > >> > > > are loaded by another kind of MBR loader (say, Grub), and they find > >> > > > out > >> > > > that they are placed beyond the 1023th cylinder? > >> > > > >> > > This should work, yes. > >> > > >> > I tried this with a boot1 from FreeBSD 4.4-rc and get a BTX error. I > >> > had to go back to the boot1 from 4.3 before I could boot. > >> > >> That could be serious. Can you post a brief description of your > >> hardware, together with the BTX register dump if possible? boot1 was > >> changed to address some problems with certain hardware, so it is > >> important to know if other incompatibilities have been introduced. > > > > The hardware is Abit VP6 mb w/dual 866 coppermines & 256 MB of PC-133 > > memory. Disk0 is a Maxtor 30 GB, disk1&2 are on the HPT-370 controller > > and are also Maxtor 30 GB drives. The 2 HD's on the HPT-370 are > > identical models. All are rated at ATA-100. The loader has been Win XP > > Pro since beta2 and runs FreeBSD about half of the time. > > > > BTX - Register dump > > > > int=00000006 err=00000000 efl=00030216 eip=00000de7 > > eax=00001d3a ebx=000030ff ecx=0000001f edx=000000ce > > esi=00000001 edi=00000009 ebp=000003fe esp=000003b1 > > cs=2364 ds=0000 es=0204 fs=0000 gs=0000 ss=9dc5 > > cs:eip=0f 00 00 00 70 00 00 00-00 00 00 68 1e 00 00 00 > > ss:esp=b9 0d 00 00 00 fe 03 c2-03 02 01 80 00 1f 00 01 > > BTX halted > > 00000000 0F0000 sldt [bx+si] > 00000003 007000 add [bx+si+0x0],dh > 00000006 0000 add [bx+si],al > 00000008 0000 add [bx+si],al > 0000000A 00681E add [bx+si+0x1e],ch > 0000000D 0000 add [bx+si],al > > That doesn't look to be very sane. > > Are you sure you haven't mixed an old version of boot2 with a new boot1 or vice > versa? Yes, coral# mount_msdos /dev/ad0s1 /mnt coral# cmp /mnt/boot1 /boot/boot1 coral# They test identical. Boot1 was copied to bootsect.bsd, which is referenced in boot.ini. Kent > > -- > > 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/ -- Kent Stewart Richland, WA mailto:kbstew99@hotmail.com http://kstewart.urx.com/kstewart/index.html FreeBSD News http://daily.daemonnews.org/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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