From owner-freebsd-questions  Sat Mar  6 17:49:23 1999
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From: Robert Nordier <rnordier@nordier.com>
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Subject: Re: 3.1R install/multiboot problem
In-Reply-To: <199903060705.SAA17254@krakatoa.mpce.mq.edu.au> from Jonathon Earnshaw TIDSWELL at "Mar 6, 99 06:05:29 pm"
To: jont@mpce.mq.edu.au (Jonathon Earnshaw TIDSWELL)
Date: Sun, 7 Mar 1999 03:47:40 +0200 (SAT)
Cc: freebsd-questions@freebsd.org
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Jonathon Earnshaw TIDSWELL wrote:
 
> > > disks:
> > >       wd0: Quantum 3GB, two NTFS partitions, the first bootable
> > >       wd1: Quantum 516MB, 1 freebsd partition
> 
> > > "F1     FreeBSD"
> > > "F5     disk0"
> > >
> > > "Default F1:"
> > >
> > > selecting F1 almost immediately results in a dump of the registers and
> > > the message "system halted".
> > > [ The screen hasn't been cleared, or scrolled by messages about device
> > > probing, the problem is early on. ]

> > > Any suggestions as to whats wrong and how to fix it ?

> > There've been a couple of compatibility problems corrected in the
> > boot code since 3.1-RELEASE; but we'd need the actual register
> > dump to tell whether this is a problem that's been fixed or needs
> > fixing.
> 
> The detailed register dump is as follows
> 
> int = 0000000e    err = 00000006   efl = 00010203    eip = 00002003
> eax = 00000002    ebx = 00000000   ecx = 0000a000    edx = 00000000
> esi = 00000000    edi = 00000000   ebp = 00094bf8    esp = 00094bec
> 
> cs = 002b   ds = 0033   fs = 0033   gs = 0033   ss = 0033
> 
> cs:eip = 00 ... 00
> 
> ss:esp: df 10 00 00 12 00 ... 00

This is apparently a variation on a bug reported in PR 10433 (see
the -bugs mailing list).  I'm presently working on analyzing this,
and further info should be available in a few days.

You may find that booting from an install floppy and entering

    1:wd(1,a)/kernel

(or something similar) at the

    boot:

prompt serves as a workaround.

-- 
Robert Nordier


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