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HD probing fails on old computer


   I've recently put my hands on an old DEC PC (486/dx2) which used to be
my computer at a previous work. I'm trying to install OpenBSD on this
machine, but the GENERIC kernel supplied with the boot floppy doesn't find
the Hard Disk attached. The computer Hardware: It's a DEC PC XL
(486/dx2) with on board SCSI (NCR 53C810) and 8MB RAM (only until I get
more RAM for it). The boot sequence gives the following information:


DECpc XL 486DX2 Version 1.01
Copyright (C) 1993 Digital Equipment Corporation
All Rights Reserved 

NCR SDMS (TM) V3.0 53C810 SCSI BIOS, PCI Rev. 2.0 
Copyright 1993 NCR Corporation.
ID 00   MAXTOR  7345-SCSI

OpenBSD boot: 

reading boot.......
probing: pc0 com0 com1 pci mem[635K 7M a20=on]
disk: fd0 hd0 
>> OpenBSD/i386 BOOT 1.23

running the command: `machine diskinfo` give the following lines:
DISK	BIOS#	Type	Cyls	Heads	Secs	Flags	Checksum
fd0	0x0	floppy	80	2	18	0x2	0x0	
hd0	0x80	SCSI	1024	10	60	0x2	0xf54162b9

The GENERIC kernel gives the following line about the adapter udring boot:
"Symbios Logic 53c810" rev 0x01 at pci0 dev 1 function 0 not configured

Then the kernel goes on probing and finding devices, but fails to find the

running boot -c and removing various devices from the config causes the
kernel to not find the SCSI host adapter at all. Can anyone help me solve
this problem. I really want to put OpenBSD on the computer.