Xref: utzoo comp.sys.ibm.pc:12641 comp.unix.xenix:1594 comp.unix.microport:108
Path: utzoo!mnetor!spectrix!clewis
From: clewis@spectrix.UUCP (Chris R. Lewis)
Newsgroups: comp.sys.ibm.pc,comp.unix.xenix,comp.unix.microport
Subject: Re: Wren III-182 question
Message-ID: <479@spectrix.UUCP>
Date: 2 Mar 88 03:41:30 GMT
References: <856@bigtex.uu.net> <3371@cbmvax.UUCP> <870@bigtex.UUCP> <3391@cbmvax.UUCP>
Reply-To: clewis@spectrix.UUCP (Chris R. Lewis)
Organization: Spectrix Microsystems Inc., Toronto, Ontario, Canada
Lines: 24
Keywords: Fixing Compaq brain damage

In article <3391@cbmvax.UUCP> grr@cbmvax.UUCP (George Robbins) writes:
|In article <870@bigtex.UUCP> james@bigtex.UUCP (James Van Artsdalen) writes:
|> In article <3371@cbmvax.UUCP>, grr@cbmvax.UUCP (George Robbins) writes:
|> 
|> [ ESDI drives know their own geometry ]
|
|In this case it seems likely that it is a special order "OEM" version.  There
|is probably a control microprocessor that is programmed slightly differntly
|so that it returns the "fradulent" geometry information.  You might try to
|compare the drive to a "normal" unit and see if there is a micro-processor
|or ROM that has different part number/version identification on it.
|
|It may not be that easy to get CDC to "fix" the unit.  In this case, you
|might try patching the driver or playing games to force it to use the
|"native" geometry...

I'm pretty sure these things have EPROMs on them which contain the geometry
along with the bad zone list.  You might be able to simply order a new
EPROM from CDC - though if the bad zone list is there you may have to figger
out the bad spots yourself.
-- 
Chris Lewis, Spectrix Microsystems Inc,
UUCP: {uunet!mnetor, utcsri!utzoo, lsuc, yunexus}!spectrix!clewis
Phone: (416)-474-1955