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From: PJML@ibma.nerc-wallingford.ac.uk (Pete Lucas)
Newsgroups: comp.virus
Subject: re: Diskette write protection.
Message-ID: <0012.9105091351.AA04501@ubu.cert.sei.cmu.edu>
Date: 9 May 91 09:30:36 GMT
Sender: Virus Discussion List <VIRUS-L@LEHIIBM1>
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Approved: krvw@sei.cmu.edu

I have some 5.25 inch diskettes that do not have a 'write protect'
notch in them, yet i can still write to them in certain drives. The
jackets of these diskettes are a pale blue color, and partially
transparent (if you hold them against a strong light source you can
see the outline of the internal magnetic medium).  If i put a sticky
tab on the disk where the notch would be, this cuts down the light
transmission enough to make the disk 'unwritable'.  Most confusing!

           Pete Lucas PJML@UK.AC.NWL.IA  G6WBJ@GB7SDN.GBR.EU