> On Dec 3, 2017, at 2:52 PM, Jonathan Morton <[email protected]> wrote:
> 
> There is no difference between "Apple" and "PC" SCSI.  As long as you can 
> physically connect things together (there are adapters), PC gear will work in 
> a Mac.  The only trouble might be booting from a CD-ROM drive without 
> "blessed" firmware.

For the most part I would agree with this statement.  However, I have a couple 
(and literally only a couple in 25 years) of drives which worked fine in a PC, 
but would not even be recognized as being on the SCSI bus in a Mac.  I was 
never able to resolve what was causing the issue and eventually moved on to 
drives which were recognized and therefore did work.

Derek

> Have you tried changing the ID on the internal HDD?  There should be a group 
> of three jumpers for that purpose; removing all three jumpers should give you 
> id 0.  On an enclosure with a selector, you have to connect the selector to 
> that jumper group for it to take effect anyway.
> 
> - Jonathan Morton

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