On Fri, 24 Mar 2000, Paul Sander wrote:

> What were the symptoms of the failure before you installed the jumper?
> I have several drives that are sworn to be good, but don't spin up until
> I run Disk Drive Toolkit and it does its initial scan of the SCSI bus.
> 
> If my problem differs from yours, do you have any other suggestions for
> getting them to spin up when power is applied?  I've already done all the
> termination and SCSI ID tricks, following the manufacturer's suggestions.

Sounds you like have the "motor enable - ME" jumper in. Almost all
modern controllers expect that feature to be off, and assume the drive
will spin up by itself on power up, Macs included. If there is no
jumper, look for "motor enable - ME" or "delayed start - DS" in the
mode pages.