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From: wmartin@ut-emx.UUCP (Wiley)
Newsgroups: comp.sys.mac
Subject: Re: How to make an unitialized disk
Message-ID: <176@ut-emx.UUCP>
Date: Fri, 23-Oct-87 12:34:04 EST
Article-I.D.: ut-emx.176
Posted: Fri Oct 23 12:34:04 1987
Date-Received: Sun, 25-Oct-87 15:59:59 EST
References: <464@aucs.UUCP>
Reply-To: wmartin@emx.UUCP (Wiley Sanders)
Distribution: na
Organization: UTexas Computation Center, Austin, Texas
Lines: 5

Get a fairly powerful magnet and rub it briskly on the outside of the
plastic case of the disk. This will scramble the magnetic stuff just
enough that the Mac won't recognize the disk as readable.
  I was able to do this once using the magnets in my Walkman headphones.
-w