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From: chapman@ug.cs.dal.ca (Paul Chapman)
Newsgroups: comp.sys.mac.hardware
Subject: RE: SuperMac XP 20 Problems
Message-ID: <1990Oct30.042847.17535@cs.dal.ca>
Date: 30 Oct 90 04:28:47 GMT
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Organization: Math, Stats & CS, Dalhousie University, Halifax, NS, Canada
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>About two days ago my hard disk started acting up.  This is what it does: after
>the machine and hard disk have been on for a while my computer does not see the
>hard disk during a subsequent restart (the flashing question mark in the disk
>is displayed).  I figured it may have something to do with the 95 degree
>weather we've been having down here so I set up a fan to blow on the hard disk
>while it is in operation.  This at least allowed it to boot on restart though
>it did not do it as quickly as it used to.

  Consider yourself lucky. It's been well below freezing here recently.

  About your hard drive, I think that the old small-capacity drives used
stepper motors to align the heads. When things get hot, the platters get a
bit bigger, just enough to misalign things. Can't think of a solution
though, except to put the drive in the refrigerator. :)

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