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Date: Wed, 10 Jul 1996 08:04:01 +1000
From: Bruce Evans <bde@zeta.org.au>
Message-Id: <199607092204.IAA06894@godzilla.zeta.org.au>
To: michaelh@cet.co.jp, se@ZPR.Uni-Koeln.DE
Subject: Re: Adding Jaz drive with sysinstall
Cc: current@freebsd.org, scsi@freebsd.org
Sender: owner-freebsd-scsi@freebsd.org
X-Loop: FreeBSD.org
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>} dmesg tells me that the Jaz reports that its a removable SCSI 2.  Is this
>} the source of the ILLEGAL REQUEST message?

>No, the JAZ seems not to like some field in a request
>sent to it and rejects the command. The command that
>caused this appears to have been the geometry query,
>which leads to the "fictious geometry" being used.

>A possible cause of this might be that there was no
>media loaded into the drive, I suppose ...

>} ...
>} sd2(ncr0:5:0): ILLEGAL REQUEST asc:24,0 Invalid field in CDB
>} sd2 could not mode sense (4). Using ficticious geometry

Iomega zip drives give the same message when media is present.  I guess
the problem is a low quality implementation of the SCSI spec.

Bruce