Re: 2.5 SCSI Drive?

[Paul Schultz <pschultz@med.wayne.edu>]

On Tue, 13 Aug 1996, Daniel Webster wrote:

> I am trying to use a 2.5 SCSI drive with My GS.  I used to use the drive 
> with a powerbook, as an external 40.  Its in an external case which is 
> powered via the ADB port, and has a DB 25 through connector for the SCSI 
> port.  The ID is externally selectable.  I have manged to get the GS to 
> see it when I use it as part of a SCSI chain (ie with another drive)  I 
> loaded the Sys on it, but by itself the GS will not see it (even with a 
> terminator attached to the port)  Also, even in the chain I can't boot 
> off of it (make it the highest SCSI ID in the chain)  It starts to boot, 
> but the welcome graphic is altered and it crashes during the thermometer 
> fill up.  Otherwise it verifies OK, took the partition (ADU) and the 
> format without complaint.
> 
> Any ideas?

What SCSI card do you have? Perhaps if you have the Rev. C Apple SCSI card
you will need to provide termination power to the SCSI bus. This would
explain why it works when part of a multi-device SCSI chain. --- One of the
other devices may have been providing the termination power for the bus.

Just a thought! 

BTW, I have a RamFAST card and use a 2.5 SCSI hard drive with my IIgs.
Works great. I have my drive internally mounted on a "SCSI Expander"
card (aka Roadrunner I believe.)

Paul.

pschultz@med.wayne.edu
Paul Schultz