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From: hopp@stolaf..stolaf.edu (Eric D. Hopp)
Newsgroups: comp.sys.amiga
Subject: Re: AmigaOS 2.0 still clicks the floppies!
Keywords: Why AmigaOS clicks the floppies
Message-ID: <150@nic.stolaf.edu>
Date: 9 May 90 05:09:01 GMT
References: <11271@shlump.nac.dec.com> <1472@trlluna.trl.oz>
Sender: news@nic.stolaf.edu
Reply-To: hopp@thor.acc.stolaf.edu ()
Organization: St. Olaf College; Northfield, MN
Lines: 10

Check this, but I think this is right.

3.5 drives have a neat feature in that they signal a disk change.  This is how
the Amiga knows when a disk is inserted.  Unfortunately, they only signal the
disk change when the heads are stepped to a different track.  Hence the click-
click-click-click from Amiga drives.  The trackdisk.device is moving the heads
back and forth between two tracks, so that it will get the disk-inserted
signal.
							-eric hopp
							 hopp@stolaf.edu