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From: jimb@amdcad.UUCP (Jim Budler)
Newsgroups: net.micro.mac
Subject: Re: SS Disks in DS Drives
Message-ID: <10120@amdcad.UUCP>
Date: Sat, 1-Mar-86 17:58:05 EST
Article-I.D.: amdcad.10120
Posted: Sat Mar  1 17:58:05 1986
Date-Received: Sun, 2-Mar-86 02:45:42 EST
References: <1876@trwrba.UUCP>
Reply-To: jimb@amdcad.UUCP (Jim Budler)
Organization: AMD, Sunnyvale, California
Lines: 24

In article <1876@trwrba.UUCP> rjs@trwrba.UUCP (Robert J. Suyehara) writes:
>...
>after).  However, I am concerned about SS disks with DS disk
>drives.  Supposedly, DS drives can read and write to SS disks,
>but Apple does not recommend using SS disks as DS disks because
>one side may not be polished.  If this is true, then wouldn't
>a SS disk cause premature wear on the one head that is against
>the unpolished side?

As far as I can tell ( from Apple, Sony, Maxell, 3M ) both sides are
polished.  If Apple allows reading single sided disks in the double sided
drives (which they do) then their primary concern is probably over the
fact that the second side is not certified, and may result in a greater
and perhaps unacceptable reliability on some disks.

I have a large installed base of single sided disks. I don't intend to
throw them out although I may never use them as double sided disks.
-- 
 Jim Budler
 Advanced Micro Devices, Inc.
 (408) 749-5806
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