Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!wuarchive!udel!princeton!phoenix!pcmeier
From: pcmeier@phoenix.Princeton.EDU (Pascal Constantin Meier)
Newsgroups: comp.sys.mac
Subject: Re: Quantum/Apple fix - New Problem
Message-ID: <10895@phoenix.Princeton.EDU>
Date: 17 Oct 89 17:54:50 GMT
References: <20167@mimsy.UUCP> <-539343565@cpl-mfh.UUCP>
Reply-To: pcmeier@phoenix.Princeton.EDU (Pascal Constantin Meier)
Distribution: na
Organization: Princeton University, NJ
Lines: 25

In article <-539343565@cpl-mfh.UUCP> martya@cpl-mfh.UUCP (Marty Adelman) writes:
>*** spector@brillig.umd.edu (Lee Spector) writes:
>
>>So far I have had no startup problems, but I
>>now have a NEW problem - Noises coming from the 
>>drive when it is NOT accessing.
>>
>I just had the new rom installed in my machine also.  I noticed this phenomena
>and thought it might be perculiar to my machine, but since you have heard it
>also I guess it is in the rom.  Near as I can tell, I read that the rom
>adds a full stroke command (??) to something or other and I think this is
>what we are probably hearing.  Any other takers ? 8-)
>

I was told by someone in the know that the original problem with the
drives was that the lubrication on the read/write arm was not performing
its duty, causing the arm to freeze up. Apple's solution to this is to
periodically "exercise" the arm when no hard disk access is being
done.

So soon some happy virus is going to come along and trash our hard disks,
and we'll be thinking the disk is doing its daily jumping jacks.....;-}

Good luck,
Pascal.