I bought a couple of used server HD's and adapters, and am finally getting
around to trying to install them in my G3 (running OS8.6)

I had a pair of 8.5G SCSI drives, and drive ID=0 started to show signs of
failure. The 2nd HD, ID=2, is ok so far.

The changeover is not as simple as I'd hoped (is anything ever?). I
removed the failing HD - and the mac boots from the drive at ID=2, but the
new HD isn't seen.

I can't find good information on how to configure the jumpers, which may
be the reason.

There are jumpers on both the adapter and on the HD. I presume I have to
set the SCSI ID on both of these (and have set it to 1).

One of the HD's is this:
https://www1.hitachigst.com/hdd/support/dk/3/32djmcjs.html

The adapter was a Chinese import from eBay, labeled SCSI Ultra160/LVD/SE
and has no components on it other than a single resister.  It has jumper
pins labeled:

TPR  DLY  REM  LED  SNC  SNC  ID0 ID1 ID2
                (X)                   (X)

and it came with jumpers on the REM and one of the SNC pin pairs (shown by
(X)

Aside from the SCSI ID settings (which I'm guessing I need to set on both
the HD and on the adapter), I don't know which of these jumpers I need.

The drive spins up, but is not seen by Drive Setup (or by FWB Mounter or
by Mount Everything or by the System Profiler), either with or without the
other jumpers on the adapter.

Barry





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