From owner-freebsd-hackers Tue Jun 6 17:11:07 1995 Return-Path: hackers-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id RAA21608 for hackers-outgoing; Tue, 6 Jun 1995 17:11:07 -0700 Received: from gndrsh.aac.dev.com (gndrsh.aac.dev.com [198.145.92.241]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id RAA21601 for ; Tue, 6 Jun 1995 17:11:04 -0700 Received: (from rgrimes@localhost) by gndrsh.aac.dev.com (8.6.11/8.6.9) id RAA00676; Tue, 6 Jun 1995 17:10:16 -0700 From: "Rodney W. Grimes" Message-Id: <199506070010.RAA00676@gndrsh.aac.dev.com> Subject: Re: Quantum hardware errors (Deferred Error: HARDWARE FAILURE asc:87,0) To: hm@altona.hamburg.com Date: Tue, 6 Jun 1995 17:10:16 -0700 (PDT) Cc: imb@scgt.oz.au, dufault@hda.com, freebsd-hackers@freebsd.org In-Reply-To: from "Hellmuth Michaelis" at Jun 6, 95 09:40:28 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1690 Sender: hackers-owner@freebsd.org Precedence: bulk > > >From the keyboard of michael butler: > > > > Peter Dufault writes: > > > > # scsi -f rsd0.ctl -m 8 > > > > WCE: 1 <--- (write cache enabled, for the -hackers folks) > [...] > > > In 2.1 the system will sanity check the mode page settings during > > > boot and will comment on anything it thinks is set wrong. > > > > Warning .. OK .. but please do not mandate such a change, some drives > > simply do not support the modification of these parameters, e.g. .. > > > > /kernel: (aha0:0:0): "MICROP 2217-15MZ1001904 HQ30" type 0 fixed SCSI 2 > > /kernel: sd0(aha0:0:0): Direct-Access 1685MB (3450902 512 byte sectors) > > >From ''SCSI Implementation in Micropolis "MZR" Products'' > Working Draft - Document No. 110366 Page 2-132: > > "Two versions of Page Code 08h exist (SCSI-I/CCS and Micropolis > unique). Switching between the two pages is accomplished via > the CHANGE DEFINITION command." > > The SCSI-I/CCS page looks like the direct access page 8 in the SCSI-II > spec X3T9.2/375R revision 10k page 204. The Micropolis unique looks > very Micropolis unique ;-) > > In the SCSI-I/CCS page 8, only the RCD and the minimum prefetch field > are supported, all others are "Not used". > > In the Micropolis unique version, some 2 or 3 more unimportant fields > are supported. And in that same manual some place you should find a jumper setting that puts the drive into either SCSI-I/CCS mode or SCSI-II mode. I suggest the person with this drive running it on a FreeBSD system change that jumper!!! -- Rod Grimes rgrimes@gndrsh.aac.dev.com Accurate Automation Company Custom computers for FreeBSD