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Date:      Tue, 3 Nov 1998 08:18:12 -0500
From:      "Larry S. Marso" <larry@marso.com>
To:        Kris Kirby <kkirby@pluto.cs.uah.edu>, freebsd-questions@FreeBSD.ORG
Subject:   Re: SCSI Jaz Drive
Message-ID:  <19981103081811.C21042@marso.com>
In-Reply-To: <Pine.GSO.3.95.981102170156.29666A-100000@pluto>; from Kris Kirby on Mon, Nov 02, 1998 at 05:06:59PM -0600
References:  <363DF659.80B06AD9@jpl.nasa.gov> <Pine.GSO.3.95.981102170156.29666A-100000@pluto>

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First of all, I have a fully functional jaz drive working on the same scsi
bus driver you're using.

First of all, you'll always get the "using fictitious geometry" error.  It
doesn't affect performance.

I think this is your real problem: right out of the box, the included
disk has a "read only" element set which many people, particularly in
the Linux world, will tell you requires a very special driver to turn
off.

Hogwash.  Just execute a:

scsiformat -w /dev/sd1 

which may take half an hour, but it will completely wipe the drive,
eliminating the read only feature.

You can them create and label one or more partitions.  I suggest you use
the /stand/sysinstall options (at the bottom of the first page), which will
help you create, label and format the partitions.  

Best regards
-- 
Larry S. Marso
larry@marso.com




On Mon, Nov 02, 1998 at 05:06:59PM -0600, Kris Kirby wrote:
> On Mon, 2 Nov 1998, Bruce H. Kwan wrote:
> 
> > Date: Mon, 02 Nov 1998 10:13:45 -0800
> > From: "Bruce H. Kwan" <Bruce.H.Kwan@jpl.nasa.gov>
> > To: freebsd-questions@FreeBSD.ORG
> 
> <snip>
> 
> > (ahc0:4:0): "iomega jaz 2GB E.15" type 0 removable SCSI 2
> > sd1(ahc0:4:0): Direct-Access
> > sd1(ahc0:4:0): ILLEGAL REQUEST asc:24,0 Invalid field in CDB
> > sd1 could not mode sense (4). Using fictitious geometry
> > 1911MB (3915600 512 byte sectors)
> > 
> > Did I set things up incorrectly? I am unable to mount_msdos this drive
> > (it's MSDOS formatted). Thanks!
> >
> 
> If I'm not mistaken, and I only know this to be true for Zip drives, the
> utilities provided by Iomega set a fixed translation (geometry) that all
> Iomega software recognizes. The SCSI controller has its own idea as to how
> the disk should be setup geometry wise. Thus even if you had it MS-DOS
> formatted, you would be unable to read it unless it was formatted as a
> hard drive under DOS. I'm sure that there is someone working on this
> problem, or it is already fixed.
> 
> --
> 
> Kris Kirby 
> UAH Mail <kirbyk@email.uah.edu> UAH CS <kkirby@cs.uah.edu>
> Home     <kris@airnet.net>      WWW <nomurphy@hotmail.com>
> -------------------------------------------
> TGIFreeBSD... 'Nuff said.    
> 
> 
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