[4386] in linux-scsi channel archive
Re: Swapping SCSI Cards - how ?
daemon@ATHENA.MIT.EDU (Matthias Andree)
Thu Jul 16 17:32:20 1998
From: Matthias Andree <mandree@sx1.HRZ.Uni-Dortmund.DE>
In-Reply-To: <Pine.LNX.3.96.980714200455.1017A-100000@statler.ampr.org> from Stephen Kitchener at "Jul 14, 98 08:12:46 pm"
To: root@g6dzj.demon.co.uk (Stephen Kitchener)
Date: Wed, 15 Jul 1998 13:31:37 +0200 (CEST)
Cc: linux-scsi@vger.rutgers.edu
Stephen Kitchener wrote:
> Hi Guys,
>
> Simple question - has anybody had any experience in swapping SCSI cards
> while attempting to keep all information available after the swap.
>
> Can't do a backup, as putting a tape-drive onto the SCSI bus causes
> time-outs.
Reeks of one of those rotten termination problems.
> Have compiled the kernel complete with the two SCSI cards in, but when I
> swap the card and boot I get the dredded 'LI'. All is ok after I swap
> back.
From the LILO docs:
"The first stage boot loader was able to load the second stage boot
loader, but has failed to execute it. This can either be caused by a
geometry mismatch or by moving /boot/boot.b without running the map
installer".
> There must be some parameters in the boot-sector that are relevent to the
> old SCSI card that the new one has problems with.
Yes. The BIOSs on those SCSI cards seem to use different mappings. Check the
BIOS settings on the "new" card for adjustments.
> I guess that I will have to boot from the Redhat boot disk and pass some
> parameters but ?
>
> Can anyone help please ?
Do you have Caldera/MS DOS or Windows 95 installed on the same machine? If
so, you might give LOADLIN a try. You might also try putting your kernel
(that one supporting both SCSI host adaptor cards) to a disk and install
LILO on disk to boot from disk. Check out the extensive LILO documentation
in /usr/doc/packages/lilo, it is really good. In the version 20 docs, you
will want to read p. 37/chapter 4.1.6 "Floppy disk installation" in
particular.
After you have created such a kernel boot floppy disk, try booting from
that, if it succeeds, try to execute /sbin/lilo and booting from hard disk.
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