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From: Leo.Bores@f14.n114.z1.fidonet.org (Leo Bores)
Newsgroups: comp.sys.mac
Subject: Formatting 800K disks in FDHD drives
Message-ID: <16584.26267CEF@stjhmc.fidonet.org>
Date: 14 Apr 90 01:19:42 GMT
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In an article of <12 Apr 90 17:19:47 GMT>, costin@cogsci.ucsd.EDU (Dan Costin) 
writes:

 DC>How does one format a disk in an FDHD drive so it can be read by an
 DC>800K drive?  800K drives will format either 800K or 400K, for
 DC>backward compatibility.  Do 1.4M drives have no backward compatibility?

Simply putting an 800K floppy into the drive activates the copy program to 
initialize it as either double or single sided (800-400K). Putting a 1.4M 
floppy into an 800K drive gets you (sometimes) an 800K disk that can no longer 
be re-formatted to 1.4M.

Leo Bores, M.D.





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