Dan,

>OK, it isn't your SCSI chain, unless you have a bad cable. (The latter is a
>real possibility!)
>Quantum drives are pretty forgiving about termination, in my experience.
>

The cable is good.  Well, at least it works with no problems when it is 
attached to my other SCSI devices.

>Are you using Mac OS 7.5? (I guess you must, with a 8500, but I have to ask!)
>

I am running System 7.5.5 on my PPC 8500/120.  I'd have to check the 
IIci, but I think it is either 7.5.5 also or 7.5.3.

>If not, do you have the Rev 4.3 asynchronous SCSI extension?
>

I just checked the Apple Tech Info library on Compuserve, and SCSI 
Manager 4.3 is built into the ROMs of all PPC computers.  (You had me 
going though when I couldn't find it in my Extensions folder!)

Regards,

Sean.


                 T. Sean (Theo) Schulze
71410.25@compuserve.com            TSSchulze@aol.com
****************************************************
"Caelum non animum mutant qui trans mare current"
("They change their sky but not their soul who cross
  the ocean.")  --  Horace