Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!apple!bionet!ames!amdahl!amdcad!pepsi!ching
From: ching@pepsi.amd.com (Mike Ching)
Newsgroups: comp.sys.ibm.pc
Subject: Re: make your own HD 3 1/2 in floppies
Message-ID: <26262@amdcad.AMD.COM>
Date: 11 Jul 89 02:13:49 GMT
References: <26260@amdcad.AMD.COM>
Sender: news@amdcad.AMD.COM
Reply-To: ching@pepsi.AMD.COM (Mike Ching)
Organization: Advanced Micro Devices, Inc. Sunnyvale CA
Lines: 16

In article <26260@amdcad.AMD.COM> phil@diablo.amd.com () writes:
>
>I just ran an experiment with double sided 3 1/2 in floppies.  On one,
>I melted a hole in the corner with a soldering iron.  On another, I
>cut the entire corner off and then resealed it with a soldering iron. 
>
>I then tried formatting as 1.44 Mb floppies -- it worked!
>
Anyone know how the 1.44Mb floppies achieve the density? More tracks?
More sectors/track? *Should* this work? You can't use 360K 5 1/4"
floppies at 1.2M because the coercivity of the coating is different but
you can make them 720K by doubling the number of tracks.

So how do 1.44M floppies differ from 720K ones besides the hole?

mike ching