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From: pratt@boulder.Colorado.EDU (Jonathan Pratt)
Newsgroups: comp.sys.mac
Subject: Re: HELP: HardDisk fails to boot
Summary: Sticky autopark may be common.
Message-ID: <6499@boulder.Colorado.EDU>
Date: 10 Feb 89 01:11:35 GMT
References: <50145@yale-celray.yale.UUCP>
Sender: news@boulder.Colorado.EDU
Reply-To: pratt@boulder.Colorado.EDU (Jonathan Pratt)
Distribution: na
Organization: University of Colorado, Boulder
Lines: 21

In article <50145@yale-celray.yale.UUCP> sun@venus.ycc.yale.edu writes:
(about hard disks not booting)
>
>answered: "The problem might be with the head parking. You can ship it back 
>to us. But I am afraid that it will be OK by the time it gets here. So why 
>don't you pick it up and shake it gentally a few time and then see what 
>happens". So for the first time, I did what I have been carefully avoiding 
>-- shake and turn upside down a few times the hard disk. And, it worked 

This leads me to believe that sticky autopark may be a common cause of
hard disk "failure."  Recently my Applecrate-60 (Seagate ST277N) exhibited
the same symptoms.  Although it's still under warranty I opened it up to
check the power supply (which was fine), and as a last resort tried some
gentle tapping, which did the trick - apparently freeing the head.

Jonathan

/* Jonathan Pratt          Internet: pratt@boulder.colorado.edu     *
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