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From: richard@cogsci.ed.ac.uk (Richard Tobin)
Subject: NCR scsi boot problem
Message-ID: <Dpn92q.3Bp.0.macbeth@cogsci.ed.ac.uk>
Reply-To: richard@cogsci.ed.ac.uk
Organization: HCRC, University of Edinburgh
Date: Wed, 10 Apr 1996 11:25:37 GMT
Lines: 59
This seems similar to some other problems I've seen described, but I
still can't fix it :-(
I just replaced my Adaptec 1542C with an NCR PCI-SC200 (NCR 810). Now
I can't boot directly from the hard disk. I had an os-bs boot sector;
it reports a missing operating system whether I choose DOS or FreeBSD.
If I boot from a DOS floppy, I can see the C: drive no problem and use
the system normally (or at least, as normally as DOS gets). If I boot
from a BSD floppy, I can type sd(0,a)/kernel at the Boot: prompt and
boot successfully. I tried booting DOS from the floppy and doing
fdisk/mbr; now I get a missing operating system message without having
to use a menu :-)
Apart from this, the NCR is fine: it reads and writes nearly 3 times
as fast as the Adaptec, so I don't want to switch back!
Other hardware: Gigabyte 486 AM/S motherboard, AMD 486DX4/120, Quantum
Empire 2GB disk.
BSD fdisk below.
If possible please reply by mail since our newsfeed is a little slow :-)
-- Richard
spottisvax$ fdisk sd0
******* Working on device /dev/rsd0 *******
parameters extracted from in-core disklabel are:
cylinders=2006 heads=64 sectors/track=32 (2048 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=2006 heads=64 sectors/track=32 (2048 blks/cyl)
Warning: BIOS sector numbering starts with sector 1
Information from DOS bootblock is:
The data for partition 0 is:
sysid 6,(Primary 'big' DOS (> 32MB))
start 32, size 204768 (99 Meg), flag 80
beg: cyl 0/ sector 1/ head 1;
end: cyl 99/ sector 32/ head 63
The data for partition 1 is:
sysid 165,(FreeBSD/NetBSD/386BSD)
start 204800, size 3686400 (1800 Meg), flag 0
beg: cyl 100/ sector 1/ head 0;
end: cyl 875/ sector 32/ head 63
The data for partition 2 is:
<UNUSED>
The data for partition 3 is:
sysid 0,(unused)
start 3891200, size 217088 (106 Meg), flag 0
beg: cyl 876/ sector 1/ head 0;
end: cyl 981/ sector 32/ head 63
--
"Hither turn thy steps, hither come to thy death and for Camilla
receive due guerdon! Shalt thou, even thou, die by Diana's darts?"
[Virgil, Aeneid X1 855-7]