Re: Help with SCSI-2

[lesherjt@vuse.vanderbilt.edu (Tilghman Lesher)]

Laer Haider (lkhaider@concentric.net) wrote:
: I received a free Seagate ST-3610N 535MB SCSI-2 HDD (technical details
: follow).  I was hoping to use it on my IIgs as a replacement HD
: (faster and bigger), but ran into some trouble.  After formatting and
: partitioning it (6 ProDOS and 1 HFS partition) using the utilities
: built into the RamFAST v3.01f SCSI card, I rebooted.  Everything
: mounted fine; Finder displayed the extra partitions (wasn't using all
: of them, but I tried that later).  I initialized each partition,
: including one HFS partition.  All is good.  Then I tried to copy from
: my old HD to the new one.  After about 5 minutes of copying, the
: system locked.

: I rebooted, tried again, same thing.  Using ProSel I tried to check
: the drive for bad blocks, system locked.  Reboot, and I tried to copy
: using ProSel, system locked.  Tried copying from a ProDOS-8 utility,
: Cat Doctor, and the system locked as soon as the copy procedure
: started.  I tried reformatting and re-partitioning several time to no
: avail.

: Deactivate the drive and everything is OK.  Hooked it up to my PC,
: reformatted, everything's great!  I was able to copy 500MB to the
: drive with no problems.  No, I don't need it on the PC.  It's already
: got over 4GB of drive space.

: Am I missing something here?  Are SCSI-2 devices not compatible with
: the RamFAST?  Not compatible with SCSI-1 devices?  The Apple IIgs?  Is
: there some hardware hack I can do?  Some driver I can use?

It sounds mysteriously like you've got termination problems.  How is
the termination set on your RamFast DIP switch?

What are the terminators you are using?  Passive or Active?  Internal or
external?

: My system is set up as follows:
: 	ROM 1 Apple IIgs.
: 	2- 3.5" Apple drive
: 	2- 5.25" floppy drives (1 Apple and 1 Mitac)
: 	RamFAST v3.01f  (got this in June `96, repaired Feb. `97)
: 	105MB Toshiba SCSI HDD
:     --> 535MB Seagate SCSI-2 HDD
: 	150MB Bernoulli Box cartridge drive
: 	Toshiba SCSI CD-ROM drive
: 	4MB RAM in an OctoRAM memory board
: 	TransWarp GS accelerator
: 	PCTransporter
: 	Stereo Sound Card
: 	GS/OS system 6.0.1 and using ProSel

Another possibility is that you're experiencing a lack of power to your
SCSI card.  A "Buggie" power supply would fix this.

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