In <1992Dec14.221159.21177@leland.Stanford.EDU> dhinds@leland.Stanford.EDU (David Hinds) writes:
| We just got a Maxtor Tahiti II optical drive from Parity Systems, and
| I'm having trouble getting it going. I remember that a while back,
| someone posted about this, and gave the DIP switch settings he used,
| but alas I did not save it. The #^%$&* instructions from Parity are
| not helpful, to be generous; they only mention the device ID switches.
| I've set the ID, and properly hooked up the drive (plus terminator).
| When I boot, 'hinv' reports an optical drive in the appropriate place.
| I remembered reading that it was possible to avoid using the Parity
| drivers and just use the regular SCSI disk drivers, so I thought I'd
| give that a try. I tried running 'fx' with a new cartridge, and it
| seemed to successfully identify the drive, and gave some messages
| about creating default partitions and so on. The disk label looked
| OK. But when I went to exit from 'fx', I got an I/O error with the
| following messages in /usr/adm/SYSLOG:
|
| > Dec 14 13:50:46 hyper unix: sc1,5,0: cmd=0x8 Unexpected info phase 46, state 49. Resetting SCSI bus
| > Dec 14 13:50:46 hyper unix: PMO87: read error on block #0.
| > Dec 14 13:50:46 hyper unix: Error detected on PMO87 due to command <dis/allow medium removal>: unit attention : Power on, reset or bus device reset occurred
|
| So, I thought I'd go ahead and install the Parity driver and rebuild
| the kernel. That seemed to work, but when I run the 'pmoinfo' thing,
| even with just '-c INQUIRY', I get an I/O error the first time, and
| the second time seems to block in the kernel. I suppose I'll log a
| call with Parity, but if anyone could send me their DIP switch
| settings, it might save me some time...
It sounds like you are trying to use media with 1024 byte sectors,
at a guess. That *should* work for the raw drive, unless I broke
it in subsequent changes, or the new firmware on the Tahiti isn't
reported the sector size correctly.
The other possiblity is that you have a cable that is too long, or
not good, or that there is no termination on the Tahiti.
--
Let no one tell me that silence gives consent, | Dave Olson
because whoever is silent dissents. | Silicon Graphics, Inc.