All over the place with this today.
1. Found manual online for my hard drive. Removed A590, drive entire deal and found jumpers on bottom of actual drive. See below.. Doesnt paste very good in this post but short story is I have EP on to enable parity check (was already set that way) and for the heck of it I changed the drive ID to 4 instead of previous 0.. It now shows up that way in SysInfo, SCSIDevs etc. So Hard drive is ID 4 and ZIP is ID 5.
2. Termination. If I read correct the termination on this hard drive is pre-set at factory with resistors. I think they have been removed. So ok maybe thats the issue. So... I had a quantum 50mb drive that was original in the A590 until I put in a 100mb (need that extra 50 MEG!) and it appears to have the line of resisters installed. So I put the old drive back in. Booted etc. Exact same results. I also experimented with termination on and off on the ZIP. No luck. So right now the 100mb drive is back in the A590 with what I assume is non-terminated set at device 4 with the ZIP drive set FOR termination device 5.
3. When I mount the ZIP0: I can get it actuate and click around. It sees it in SysInfo. SCSI Devs sees it as well and those are results are unchanged from my earlier post except now the main hard drive ID4 due to me changing the jumpers.
So had an interesting exercise today but no real progress other than changing the jumpers on the drive for ID4.
My earlier SCSIDevs results as reminder. Only change is ID for quantum is now 4.
ID Device REM Vendor Product-String REV
0 Disk N Quantum LP105S 910109405 301
5 Disk Y IOMEGA ZIP 100 D.09
ID UNIT SIZE FS Partition PRI BUFFS
0 DH0 100M FFS Boot 1 200
5 ***SCSI READ ERROR*****
Terminating Resistors
---------------------
At the factory, Quantum installs three resistor networks in socket on
the drive PCB (Printed Circuit Board) to terminate the SCSI bus.
Only the first device - usually the host - and the last device an a
SCSI bus should contain terminating resistors. When installing the
ProDrive LPS 120/240S hard disk drive in any other position on the
SCSI bus, remove the terminating resistors.
Jumper A1
---------
+--+--+--+ +--+--+--+
|SS|EP|WS| |A0|A1|A2| Drives: LPS 120/240
+--+--+--+ +--+--+--+
J2 SCSI ID
-----------
+----------+-----------------------+
| SCSI ID | Jumpers |
| | A2 | A1 | A0 |
+----------+-------+-------+-------+
| 0 | OPEN | OPEN | OPEN |
| 1 | OPEN | OPEN | CLOSED|
| 2 | OPEN | CLOSED| OPEN |
| 3 | OPEN | CLOSED| CLOSED|
| 4 | CLOSED| OPEN | OPEN |
| 5 | CLOSED| OPEN | CLOSED|
| 6 | CLOSED| CLOSED| OPEN | Factory default
| 7 | CLOSED| CLOSED| CLOSED|
+----------+-------+-------+-------+
A2 (MSB), A1, or A0 determine the drive's binary SCSI address ID.
+--------------------+------+-------+--------------------------------
|Quantum Drive Type |Jumper|Setting|Description
+--------------------+------+-------+--------------------------------
|ProDrive 40/80/120/ | SS |OFF |Self Seek Test disabled
|170/210 | |ON |Self Seek Test enabled: For
|LPS 52/80/105 | | |factory use ONLY! The test is
| | | |indicated when power is applied
| | | |to the drive. The test will
| | | |continue until power is removed.
| | | |On most drives, the LED remains
| | | |on during the test (a flashing
| | | |LED indicates a drive error).
+--------------------+------+-------+--------------------------------
|ProDrive 40/80/120/ | EP |OFF |Parity Check disabled.
|170/210 | |ON |Parity checking enabled: The
|LPS 52/105/120/240 | | |drive generates parity
| | | |information and performs parity
| | | |checking of data across the SCSI
| | | |bus.
+--------------------+------+-------+--------------------------------
|ProDrive 120/170/210| WS |OFF |WaitSpin disabled. Drive motor
|LPS52/80/105/120/240| | |power is applied when system
| | | |power is applied to the
| | | |computer.
| | |ON |WaitSpin enabled. Drive motor
| | | |power is applied when the host
| | | |sends a START/STOP UNIT command.
| | | |This option permits unit power
| | | |sequencing so that the
| | | |computer's power supply in a
| | | |multidevice system is not over-
| | | |loaded.