Xref: utzoo comp.sys.amiga.tech:144 comp.sys.amiga:16994
Path: utzoo!mnetor!uunet!lll-winken!lll-tis!ames!pasteur!agate!eris!spencer
From: spencer@eris (Randal m. Spencer [RmS])
Newsgroups: comp.sys.amiga.tech,comp.sys.amiga
Subject: Re: Getting a Mac Hyperdrive to work with a A2090
Message-ID: <8164@agate.BERKELEY.EDU>
Date: 31 Mar 88 04:22:49 GMT
Sender: usenet@agate.BERKELEY.EDU
Reply-To: spencer@eris.berkeley.edu (Randal m. Spencer [RmS])
Organization: Infinity Software :-)
Lines: 41

Recently on *comp.sys.amiga.tech* matt@elxsi.UUCP (Matt Shaver) wrote:
...In article <3006@gryphon.CTS.COM> jdm@gryphon.CTS.COM (John Mesiavech) writes:
...>external Mac SCSI bus.  When we try to PREP the drive, the Amiga locks
...
...I am using an ST251N drive internal to the A2000.  I have not had PREP hang
...
...I did have a problem trying to use a non protected version of DPaint II on
...the hard disk.  Whenever I tried to load non- lo-res pictures from the hard
...disk I would get a system requestor indicating that the volume got a read/
...write error.
...
...                          Good luck and thanks,  Matthew.

Ok, on the latter point, the problem you (and I) are having is a lack of the
new device driver for the 2090.  I had this problem once before and AndyF.
sent me the new driver (thanks Capt'n), but when I added another driver the
lousy Install program copied over that file and stuck me with the original
one again.  So, if I am using a high bitplane program (like CLImate), and 
I access my SCSI drive (really a micropolis 40 meg ST506 drive attached to
an Adaptec SCSI <-> ST506 converter) I will get Read/Write errors.  I am 
looking for someone with the new driver, but I don't know where to get it
generally (other than direct from Commodore).

The other problem that I seem to have discovered is that if you have a drive
that is supposed to be a SCSI drive, but is really an ST506 attached to a
host adapter (like my Adaptec), you can't specify any bad blocks when using 
prep.  I had the drive already low-level formatted, and the Adaptec had
written a map of all the bad blocks already, so I just did high level 
formating and all worked well.  But I wonder what I would do to map out
the bad blocks if I hadn't owned the CLtd controller....

So to the first person, I suggest that you don't really have a SCSI drive,
but one hooked to an adapter (like all the SuperMac drives turn out to be
of this kind).

   Randy

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Randy Spencer      P.O. Box 4542   Berkeley  CA  94704        (415)222-7595 
spencer@mica.berkeley.edu        I N F I N I T Y         BBS: (415)222-9416
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