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From: burton@parcvax.Xerox.COM (Philip M. Burton)
Newsgroups: comp.sys.ibm.pc
Subject: Re: 30MB Hard Disk Problem
Message-ID: <349@parcvax.Xerox.COM>
Date: Thu, 18-Jun-87 23:24:28 EDT
Article-I.D.: parcvax.349
Posted: Thu Jun 18 23:24:28 1987
Date-Received: Mon, 22-Jun-87 04:46:28 EDT
References: <4490004@hpcvc0.HP> <536@hplabsz.HPL.HP.COM>
Reply-To: burton@parcvax.xerox.com.UUCP (Philip M. Burton)
Organization: Xerox PARC
Lines: 13

While I have not heard rumors specifically about the ST 238 having problems
if the screws are tightened too much, I have had actual experience with this
problem before.  When I worked at Fortune Systems, we used Tandon floppies,
which were fine on the lab bench, but had tremendous problems in use.

It turns out that the base casting wasn't even, so if you tightened the
drive too much, you threw the drive out of alignment.  

If it could happen with floppies, it certainly could happen with rigid drives,
where the tolerances are much, much tighter.

Phil Burton
Xerox Corp.