NetBSD Problem Report #40701
From www@NetBSD.org Fri Feb 20 16:49:21 2009
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Date: Fri, 20 Feb 2009 16:49:20 +0000 (UTC)
Subject: NetBSD 4.0.1 won't boot on old 486
>Synopsis: NetBSD 4.0.1 won't boot on old 486, "total memory = 636 KB"
>Arrival-Date: Fri Feb 20 16:50:00 +0000 2009
>Last-Modified: Fri Nov 19 00:09:09 +0000 2010
>Originator: Dave Mischler
I don't know if anybody actually cares about this...
I have an old 486 system with 16 MB RAM. It ran NetBSD 0.8 through 1.21 before being mothballed quite a few years ago. I had a possible application for it and thought I would try NetBSD 4.0.1 on it.
This problem occurred when I tried to boot from the floppies, but I didn't know how to set up a serial console with the boot floppies. I installed the system on an old hard disk using another machine and moved it to the problem system to get a console output.
Here is the console output:
>> NetBSD/i386 BIOS Boot, Revision 3.3
>> (builds@wb30, Tue Oct 7 21:54:59 PDT 2008)
>> Memory: 640/15360 k
Press return to boot now, any other key for boot menu
booting hd0a:netbsd - starting in 0
WARNING: skipping large memory map entry: 0xff0002/0x200000a80000201/0x4
BIOS CFG: Model-SubM-Rev: fc-01-00, 0x70<KBDINT,RTC,IC2>
warning: too little memory available; have 651264 bytes, want 2097152 bytes
running in degraded mode
press a key to confirm
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The NetBSD Foundation, Inc. All rights reserved.
Copyright (c) 1982, 1986, 1989, 1991, 1993
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NetBSD 4.0.1 (GENERIC.NOACPI) #0: Tue Oct 7 23:28:12 PDT 2008
total memory = 636 KB
rbus: rbus_min_start set to 0x20000000
avail memory = 504 KB
I assume that this is due to a BIOS problem that was worked around on the earlier versions that ran on this hardware. I just thought that since the old CPU and small RAM are still listed as supported that somebody might want to know.
Try to boot.
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
Copyright © 1994-2007
The NetBSD Foundation, Inc. ALL RIGHTS RESERVED.