Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!cs.utexas.edu!usc!dianne.usc.edu!blarson
From: blarson@dianne.usc.edu (bob larson)
Newsgroups: sci.electronics
Subject: Re: Slowing down a disk drive
Keywords: 350 rpm -> 300 rpm
Message-ID: <22632@usc.edu>
Date: 3 Feb 90 07:17:35 GMT
References: <324@ctycal.UUCP>
Sender: news@usc.edu
Organization: USC AIS, Los Angeles
Lines: 34

In article <324@ctycal.UUCP> ingoldsb@ctycal.UUCP (Terry Ingoldsby) writes:
>I have an ancient
>(venerable) computer that uses a 96 tpi double sided double
>density floppy disk drive.

>Thinking that since a PC high density drive also has 80 tracks
>per inch, 

80 tracks at 96tpi you mean

>and that the only difference was the rotational
>speed,

Nope.  They use different magnetic media (not interchageable),
different clock speed, and probably different read/write heads.

> AND that the data format is generated by the disk
>controller,

partially true

> I bought a high density 1.2 MByte disk drive.

Mistake.  As far as I can tell, even the ones that claim to be able to
handle both formats don't.  Do yourself a big favor and buy a good
drive, like a TEAC 55f.  (I've never hand any problems with them, like
I had with several other brands.) Don't get stuck with a 55g or any
other HD drive.  The 720k 3.5" drive I have works with no problem as
a second drive.

-- 
Bob Larson	blarson@dianne.usc.edu		usc!dianne!blarson
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