On Sun, 13 Sep 1998, Wayne Pascoe wrote:
> Uh, quick question... Is your first disk scsi or IDE ? If it's also scsi,
> you just need to make sure that you SCSI ID on the first drive is 0 and go
> up from there...
--skip--
> >[EMAIL PROTECTED] wrote:
> >>
> >> Well so far, I haven't been able to get a response from the list. This is
> the
> >> seond time that I tried to add another disk to an existing system using
> SCSI
> >> controllers. The first time out, I had no choice but to re-install
> everything.
> >> It's just so annoying when the system gets screwed up once the second
> disk is
> >> added. The second disk becomes drive 1 and the machine just won't boot
> >> properly. I had some luck forcing drive 1 to be deected first, but just
> the
> >> same, LILO won't install, swap cannot be used, and the only way to boot
> the
> >> machine is to use a floppy boot disk.
> >>
--skip--
> >what little I know I will share. At one time there was some trouble
> >supporting the Adaptec conroller (2940 maybe?). But I don't think this
> >is a Linux problem, scsi systems can be set up either to automagically
> >assign drive numbers or to manually (usually with jumpers) choose the
> >drive numbers. Look into this, you may have to manually do it.
I have a completely SCSI system HD, CDROM, IOMEGA Zip, and they all have
to have the SCSI bus number set on the device in one way or another.
There is room for 7 devices on the bus. Normally, one wants to put the HD
or HDs as the lowest numbers 0, 1,... Then the slower devices up to six.
Position 7(actually the 8th) is the controller itself. In my cases
the HD is set with a movable jumper, the CDROM and the Zip drive with
switches on the back. Every device _must_ have its own bus slot. Also,
be sure the bus is terminated correctly at both ends.
The first device will be /dev/sda, the second /dev/sdb, etc., except that
CDROMs will be /dev/scd. The number is the partition number on the disk.
Good luck,
Gordon A. Gallup Dept. of Physics and Astronomy
University of Nebraska-Lincoln Lincoln, NE 68588-0111
Voice: (402)472-1230 FAX: (402)472-2879
http://www.unl.edu/physics/
