Date: Tue, 6 Jun 1995 17:10:16 -0700 (PDT) From: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> To: hm@altona.hamburg.com Cc: imb@scgt.oz.au, dufault@hda.com, freebsd-hackers@freebsd.org Subject: Re: Quantum hardware errors (Deferred Error: HARDWARE FAILURE asc:87,0) Message-ID: <199506070010.RAA00676@gndrsh.aac.dev.com> In-Reply-To: <m0sJ4UG-0002OfC@ernie.altona.hamburg.com> from "Hellmuth Michaelis" at Jun 6, 95 09:40:28 pm
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> > >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
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