[4376] in linux-scsi channel archive
Re: Swapping SCSI Cards - how ?
daemon@ATHENA.MIT.EDU (Larry M. Augustin)
Wed Jul 15 13:35:50 1998
Date: Wed, 15 Jul 1998 10:32:36 -0700
From: "Larry M. Augustin" <lma@varesearch.com>
To: "George E. Lass" <George.Lass@osc.com>
Cc: Stephen Kitchener <root@g6dzj.demon.co.uk>,
Linux SCSI <linux-scsi@vger.rutgers.edu>
In-Reply-To: <35ABBFA5.7BFCD134@osc.com>
It's likely that the two controllers have different
Cylinder/Head/Sector (CHS) geometry mappings. You can try these
things:
1. With the old controller installed, ut "linear" in /etc/lilo.conf,
re-run lilo, and install the new controller.
2. Install the new controller, boot from floppy, and do a backup/restore
from tape.
Linux uses linear sector numbers, rather than the CHS numbers, so if
you can boot the machine using the new controller, you should be able
to mount the old hard disk and get data off of it.
Larry
> George E. Lass writes:
> Are both the cards the same or are they different?
>
> If they are different then you will need to
> rebuild /boot/initrd for the other adapter
>
> Its been quite a while since I've done this
> and I am looking for my notes on how I build
> the new initrd...
>
> I'll keep you posted
>
> George
>
> 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.
> >
> > 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.
> >
> > There must be some parameters in the boot-sector that are relevent to the
> > old SCSI card that the new one has problems with.
> >
> > I guess that I will have to boot from the Redhat boot disk and pass some
> > parameters but ?
> >
> > Can anyone help please ?
> >
> > tia
> >
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> > - S.M.Kitchener stephen@g6dzj.demon.co.uk -
> > -- If god had intended man to smoke - he would have set him on fire ----
> > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
> >
> > -
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