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From: dvljrt@cs.umu.se (Joakim Rosqvist)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Could NoClick damage any drive?
Message-ID: <1991May3.092138.4888@cs.umu.se>
Date: 3 May 91 09:21:38 GMT
References: <91120.220304MAJI@SLACVM.SLAC.STANFORD.EDU> <1991May2.162543.7165@javelin.sim.es.com>
Sender: news@cs.umu.se (News Administrator)
Organization: Dep. of Info.Proc, Umea Univ., Sweden
Lines: 15

>The no-clicker programs CAN damage some drives, but the ones at risk
>are cheap drives, not "good" ones. The drives click because the Amiga
>steps the heads from track 0 to track 1 to see if a disk has been
>inserted. The no-click programs make the heads step backwards from track
>0 to (the non-existant) track -1. If it's a good drive with a track 0
>sensor it refuses to step the head backwards past track 0. If the drive
>does not have a track 0 sensor, it bangs the head mechanism against a
>physical stop. This can cause head alignment problems.
>
Those drives could be silenced too. I have a modification on my kickstart
wich will let me select for each drive wich method to use to make it shut up.
Either step towards -1 or step normally and immediately step back again
before the head moves.

/$DR.HEX$