17 Jan
2011
17 Jan
'11
6:26 a.m.
Anyone on the list have experience installing A/UX on a 68k Mac? I'm
running into some very odd issue trying to bring up my Centris 610. The
Centris shipped with a 68LC040 processor and I've upgraded to a "full"
RC68040 CPU, since that's a requirement for A/UX. The CD-ROM drive is one
of the units known to be compatible with A/UX.
The FAQ claims that the installer understands third-party hard disks
(unlike the MacOS installer) so I'm trying to use (variously) an older IBM
Deskstar 850MB and/or Fujitsu 500MB SCSI drive for the install target.
Here's the odd part: With the original Apple-branded OEM Quantum drive
(which I do not want to overwrite) on the SCSI bus the installer
recognizes the CD-ROM and is willing to begin the process. However, with
any of the third-party hard drives in the system it is unable to recognize
_anything_ on the SCSI bus - doesn't see the hard disk or the CD-ROM.
I've checked and double-checked the jumpering on the hard disk and it's
not conflicting with the CD-ROM. Both the IBM and Fujitsu are fairly
run-of-the-mill 50-pin SCSI units.
I've never had issues in the past with non-Apple drives hanging the bus or
preventing access to other devices, so this one's really a head-scratcher.
Any ideas what might be throwing the SCSI subsystem for a loop?
Steve
--
17 Jan
17 Jan
6:31 a.m.
What version of A/UX are you trying to install? Do you have the boot disk
for that version? Have you checked termination on the new drive along with
SCSI ID?
----- Original Message -----
From: "Steven Hirsch" <snhirsch at gmail.com>
To: "Classic Computers Mailing List" <cctech at classiccmp.org>
Sent: Monday, January 17, 2011 9:26 AM
Subject: Apple A/UX install
Anyone on the list have experience installing A/UX on
a 68k Mac? I'm
running into some very odd issue trying to bring up my Centris 610. The
Centris shipped with a 68LC040 processor and I've upgraded to a "full"
RC68040 CPU, since that's a requirement for A/UX. The CD-ROM drive is one
of the units known to be compatible with A/UX.
The FAQ claims that the installer understands third-party hard disks
(unlike the MacOS installer) so I'm trying to use (variously) an older IBM
Deskstar 850MB and/or Fujitsu 500MB SCSI drive for the install target.
Here's the odd part: With the original Apple-branded OEM Quantum drive
(which I do not want to overwrite) on the SCSI bus the installer
recognizes the CD-ROM and is willing to begin the process. However, with
any of the third-party hard drives in the system it is unable to recognize
_anything_ on the SCSI bus - doesn't see the hard disk or the CD-ROM. I've
checked and double-checked the jumpering on the hard disk and it's not
conflicting with the CD-ROM. Both the IBM and Fujitsu are fairly
run-of-the-mill 50-pin SCSI units.
I've never had issues in the past with non-Apple drives hanging the bus or
preventing access to other devices, so this one's really a head-scratcher.
Any ideas what might be throwing the SCSI subsystem for a loop?
Steve
--
6:55 a.m.
--- On Mon, 1/17/11, Steven Hirsch <snhirsch at gmail.com> wrote:
Here's the odd part: With the original
Apple-branded
OEM Quantum drive (which I do not want to overwrite) on the
SCSI bus the installer recognizes the CD-ROM and is willing
to begin the process. However, with any of the
third-party hard drives in the system it is unable to
recognize _anything_ on the SCSI bus - doesn't see the hard
disk or the CD-ROM. I've checked and double-checked the
jumpering on the hard disk and it's not conflicting with the
CD-ROM. Both the IBM and Fujitsu are fairly
run-of-the-mill 50-pin SCSI units.
It's interesting you should have this problem with A/UX. For many years, the
"trick" to formatting non-Apple drives on a Mac was to use the HD Setup that
shipped with A/UX - it didn't care. You could use that version of HD Setup to format
any hard drive, and after it was formatted, MacOS saw it just fine.
Are you sure you're not getting bitten by SCSI termination issues, or ID conflicts? If
you boot from floppy with the drive as the only disk on the bus, does it work? The staple
of old Mac setup was always a modified Disk Tools floppy - bootable version of System 7,
with the Apple HD Setup program replaced with a hacked one, or the one that shipped with
A/UX.
-Ian
7:23 a.m.
Steven Hirsch wrote:
Here's the odd part: With the original
Apple-branded OEM Quantum drive
(which I do not want to overwrite) on the SCSI bus the installer
recognizes the CD-ROM and is willing to begin the process. However, with
any of the third-party hard drives in the system it is unable to
recognize _anything_ on the SCSI bus - doesn't see the hard disk or the
CD-ROM. I've checked and double-checked the jumpering on the hard disk
and it's not conflicting with the CD-ROM. Both the IBM and Fujitsu are
fairly run-of-the-mill 50-pin SCSI units.
Did you only check the SCSI ID jumpers, or did you also check the
termination and termination power jumpers? Multiple devices providing
terminator power can sometimes cause this symptom, especially if the
SCSI bus arbiter is a bit sensitive.
Peace... Sridhar
6:15 p.m.
New subject: Apple A/UX install - SOLVED
On Mon, 17 Jan 2011, Sridhar Ayengar wrote:
Steven Hirsch wrote:
Thanks to all who responded! It turned out to be two problems:
- Active termination. I've run into this before and should have
remembered. Turning on termination at the drive (at least with IBM
drives) simply renders the entire bus non-functional.
- Synchronous negotiation. This was the default setting for both drives
and it apparently must be disabled.
Once I made those two changes together, bingo! Back to life. I'm busy
installing A/UX right now.
Steve
--
Here's the odd part: With the original
Apple-branded OEM Quantum drive
(which I do not want to overwrite) on the SCSI bus the installer
recognizes the CD-ROM and is willing to begin the process. However, with
any of the third-party hard drives in the system it is unable to
recognize _anything_ on the SCSI bus - doesn't see the hard disk or the
CD-ROM. I've checked and double-checked the jumpering on the hard disk
and it's not conflicting with the CD-ROM. Both the IBM and Fujitsu are
fairly run-of-the-mill 50-pin SCSI units.
Did you only check the SCSI ID jumpers, or did you also check the termination
and termination power jumpers? Multiple devices providing terminator power
can sometimes cause this symptom, especially if the SCSI bus arbiter is a bit
sensitive. 
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