Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!usc!elroy.jpl.nasa.gov!wciu!abode!scale
From: scale@abode.ttank.com (Luis Outumuro)
Newsgroups: comp.sys.atari.st.tech
Subject: Re: ICD micro ST and SH205
Keywords: Help! Hard Disk
Message-ID: <1991Jun11.044608.3507@abode.ttank.com>
Date: 11 Jun 91 04:46:08 GMT
References: <10170@star.cs.vu.nl> <1991Jun10.021825.1034@abode.ttank.com> <1991Jun10.050857.6668@wam.umd.edu>
Organization: Abode Computer Services
Lines: 36

In article <1991Jun10.050857.6668@wam.umd.edu> cmedley@wam.umd.edu (Charles Henry Medley) writes:
>
>I am trying to attach a Mac external SCSI drive (Quantum 105S) to the SCSI
>port on the back of my Supra 30MB Atari Hard Disk.  I'm using the 1988
>Supra Software and Host Adapter and it doesn't have the format parameters
>to handle a Quantum 105S.  Also, when I plug up the disk to the external
>SCSI port, the Quantum 105S is online but the system never recognizes its
>presence as device 1, LUN:0.  I've swapped the 105 and the 30's mechs and
>the 105 functions fine, but it seems that even after removing the SCSI
>terminator on the 105, both drives are not working in conjunction.  Does
>anyone know if the Supra Host Adapter of that era can handle the Quantum?
>Also, if I get an ICD Host Adapter, does that end all of my problems?  And
>finally, a friend told me that I should use Atari's HDX Formatter for
>my extended partitions because it is the only one supported.  Is there
>some incompatibility between Atari's extended partitions, Supra's and ICD's?

	Hi Charles,
		As soon as you can, call Quantam's Technical Support and ask
them for the format parameters for the 105S; and while you have them on the
telephone, ask them to send you a technical reference manual for the 105S 
(Supra's software will let you enter the parameters manually if you know
them).  Remove the terminator resistor pack from the first drive in the DMA
chain (the Supra's drive) only; leave the terminator resistor pack in the last
drive of the chain.  Set the Supra as device #0; then the Quantam as device
#1, 2 or 4 or any device # that the Supra software will recognize the 
Quantam.  Depending on the mechanism that the Supra is using, you may have to 
switch the device numbers around.
	Now about extended partitions under TOS.  As far as I know (and I could
be wrong, somebody please correct me if I am), BGM (or extended TOS) partitions
are the same regardless whether it's Atari's, ICD's or Supra's; at least I have
had no problems with the three (and I use all three of them).  If you do want
to use BGM partitions though, make sure that you are using at least TOS 1.04
(1.4) or higher.  So long as you are going to use Supra's software; I would 
also recommend using PinHead and Diamond Cache.  Take care, bye..........

					Luis