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From: danl@intelca.intel.com (Dan Lau)
Newsgroups: comp.sys.apple,comp.sys.mac,comp.sys.mac.programmer
Subject: MAC floppy format
Keywords: MAC, floppy, GCR
Message-ID: <202@intelca.intel.com>
Date: 12 Oct 88 17:57:12 GMT
Article-I.D.: intelca.202
Organization: Intel Corp., Santa Clara, Ca.
Lines: 16

A friend asked me to post this for him, so please reply to me
via mail directly, as I normally do not read these
news groups.  Thanks.  (P.S., if this was discussed
recently, please someone send me a summary).
	Dan Lau, Intel Corp. (...!decwrl!intelca!danl)

I am looking for information on the Mac floppy disk format
and 3.5 inch drives.  I need specific information on:
- how GCR works and how the drives works.
- what is the width of the data window.
- what are the five different speeds and data rates for
  the different groups of tracks.
- how are sectors linked into files.
The published material tells me how many tracks and sectors
per track, but that is all I can find.  Is this stuff
published anywhere.  Thanks.