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From: rayz@csustan.UUCP (R. L. Zarling)
Newsgroups: net.micro.cbm
Subject: Re: Write protect on a 1541 drive
Message-ID: <129@csustan.UUCP>
Date: Sat, 9-Aug-86 16:59:47 EDT
Article-I.D.: csustan.129
Posted: Sat Aug  9 16:59:47 1986
Date-Received: Mon, 11-Aug-86 04:25:13 EDT
References: <3002@caip.RUTGERS.EDU>
Reply-To: rayz@csustan.UUCP (R. L. Zarling)
Organization: CSU, Stanislaus; Turlock, California
Lines: 11

In article <3002@caip.RUTGERS.EDU> prindle@nadc writes:
>	Is it possible to "write" on a diskette inserted into a 1541 when the
>	write enable notch is properly covered?

There is a hardware interlock, that cannot be overridden by software.  You
cannot write on a write protected disk (unless you modify the drive).
However, power glitches *can* write on *any* disk which is left in the
drive when power is cycled on or off!   This unfortunately often affects
track 18, since the head is often positioned there when the power glitch
hits.  Therefore, *never* have a disk in the drive when you turn the power
on or off.