Re: SCSI HDs and Apple HS SCSI

[jkeim@unlinfo.unl.edu (james keim)]

Albert Chin-A-Young (china@-nospam-pprd.abbott.com) wrote:
: Anything special to getting a SCSI HD to work with an Apple HS SCSI
: card? I currently have a Conner 80MB CP-3180 and tried partitioning a
: Seagate ST-1480N and ST-31230N. Neither of the drives are recognized.
: I've tried the Advanced Disk Utilities that comes on the SystemTools1
: disk of 6.0.1 and the SCSI Utilities disk that came with the Apple
: card. All they return are errors about not being able to read the
: drive. Both drives are SCSI-2.

Albert--
 
First you should be sure that your SCSI chain is getting termination 
power.  The Apple HS SCSI card does not supply termination poweer 
without a small modification (just need to solder a small diode to the
back of the card).  I've done the modification with two Apple HS SCSI 
cards and I can't solder.  If you have a friend or aquaintance that 
can do the soldering, all the better.
 
If that doesn't work then my next suggestion you aren't going to like.
I've had mixed luck with Seagate drives.  Occasionally I've been able 
to use them but most of the time I've had the same problem you are 
having.  I remember on Genie there being a discussion that Seagate 
drives were less than ideal for Apple II use.  However, others have 
had no problems.

Try the term power modification and see what happens (directions can 
be found on ground along with a GIF that shows where the mod should be
done--look in the Misc and MiscInfo directories).

Good luck with it.
--James Keim