Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!swrinde!elroy.jpl.nasa.gov!sdd.hp.com!hplabs!hpfcso!hppad!laszlo
From: laszlo@hppad.waterloo.hp.com (Joe Laszlo)
Newsgroups: comp.sys.mac.system
Subject: Re: Low Density vs High Density
Message-ID: <15110001@hppad.waterloo.hp.com>
Date: 28 Feb 91 19:49:55 GMT
References: <15143@chaph.usc.edu>
Organization: HP Panacom Div Waterloo ON Canada
Lines: 21


I've been using DD disks as HD disks for a while too... so far one disk
wouldn't format so I used it as an 800K (and it is fine).

High density drives use _lower_ field strengths - that's how more data can
be put on the disk - the density is higher, so the data takes less area.

(think of a low density track being twice as wide as a high density track if
you like that's :-)

Does anybody know where to get a 3.5" disk hole puncher? ( A good one; I
remember using a single-hole punch for 5.25" disks in the old days... some
machines used the timing hole and you had to open cut/force open the disk,
take the floppy out, punch a symmetric timing hole, replace the floppy and
tape the disk shut... )


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    laszlo@waterloo.hp.com
    jflaszlo@sunee.waterloo.edu
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