[rescue] SS2 SS10 not able to see disks......

[Steve Pacenka]

At Sun, 30 Sep 2001 22:09:12 -0700 Rob Bains <rbains at ieee.org> wrote:

>Anyone had this happen to them before?  I've got a SS2 with 64M RAM, and
>a SS10 also with 64M RAM. When I boot the machines, I get:
>
>SCSI Device 3, 0 is not responding
>Can't open boot device
>
>Shouldn't the machine be able to see the disk any way at boot time
>regardless of whether or not it has OS on it?

probe-scsi-all from firmware will see the drive even if there is no OS or 
partition table on it, as long as the drive is viable, it is configured to 
work in a Sparcstation, and there is nothing in the external SCSI chain that 
is causing a problem on the SCSI bus.

>So far, I've tried:
>
>Booting both with two different disks (Seagate ST30xxx), & Quantum
>(can't remember the exact product ID's).
>Changing jumpers on the disks to change SCSI ID's (same problem)
>Installing OS on the disk by booting from the CD (Sol 2.5.1, & 2.6, just
>to be safe)
>Doing probe-scsi (came back to the ok prompt without reporting any
>errors)

Two machines failing with two different drives looks to me like a drive configuration problem.  Disable termination on the drive.  Set the first drive for ID 3; if you use a second drive set it for ID 1.  I believe that parity is ignored and auto-spinup doesn't matter with a single drive.  On IBM and Quantum drives I had in a Sparc 10 the only jumpers set were for the IDs.

Do you have anything connected to the external SCSI ports besides the CD?  It could be that something external has an ID that is interfering with the internal drive ID.  It sounds like your CD drive is okay if you can boot a CD with it; the CD's ID should be 6 and termination is necessary at the end of the external chain.

-- SP