Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!clyde.concordia.ca!uunet!lll-winken!ames!haven!mimsy!mojo!russotto
From: russotto@eng.umd.edu (Matthew T. Russotto)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Drilling holes in DS/DD -> DS/HD
Message-ID: <1989Dec14.053311.28253@eng.umd.edu>
Date: 14 Dec 89 05:33:11 GMT
References: <5678@ncar.ucar.edu> <3308@hub.UUCP>
Sender: news@eng.umd.edu (The News System)
Reply-To: russotto@eng.umd.edu (Matthew T. Russotto)
Organization: Merriversity of Uniland, College Purgatory
Lines: 15

In article <3308@hub.UUCP> 6600pete@hub.UUCP writes:
>From article <5678@ncar.ucar.edu>, by schabtac@porter.uucp (Adam Schabtach):
>> I knew a guy who went one step further, and put a switch on the front of his
>> disk drive that allowed him to defeat the microswitch inside that "felt"
>> the write-protect notch.
>> ...perform a similar modification on a newfangled 3.5" drive.
>
>I believe the FDHD HD notch is read by a beam of light. So messing with it
No, that doesn't make a difference-- assuming a photoresistor is used,all
that would be required is a SPDT switch that connected a fixed size resistor
instead of the receptor end of the photoresistor.
For the microswitch, all that was required was to short it out entirely,
--
Matthew T. Russotto	russotto@eng.umd.edu	russotto@wam.umd.edu
][, ][+, ///, ///+, //e, //c, IIGS, //c+ --- Any questions?