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Article #8261

Re: DS/DD --> DS/HD 3.5" Disk Notchers

#8261
From: Marc Ahlse
Date: Tue, 12 Mar 1991 23:08
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sguerke@brahms.udel.edu (Stephen Guerke) writes:

>In article <1991Mar11.182336.3274@vax5.cit.cornell.edu> u9hx@vax5.cit.cornell.edu writes:
>>Does anyone own one of those disk notchers that punches a hole so that you can
>>format a 720k disk into a high density disk?  If so, does it really work?  How
>>reliable is such device?
>>
>>I have heard stories on both sides, and am trying to decide if I should invest
>>in one myself.  Thanks

>IMHO you're taking a chance.  The media on a HD diskette is much
>much more dense than that on a 720K diskette.  It is my understanding
>that at the factory(s) the diskettes are tested for density and those
>that pass are marked HD and those that don't are marked DD.  I
>wouldn't trust MY data to such a diskette.  One of the faculty members

 I've been looking for just such a notcher, any pointers WILL be
appreciated. I know a big company around here that actually uses
one, and they tried to convince me that it worked. So I took a few
samples and tested them. No problem. I guess it's cheaper to produce
one type of media and sell it to two different markets than to have
two different products. As you probably know, that's what way they
do with modern sewing machines, cripple them and sell them as
a 'budget offer'.

marc@isy.liu.se
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From: marc@isy.liu.se (Marc Ahlse)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: DS/DD --> DS/HD 3.5" Disk Notchers
Message-ID: <marc.668819304@rainier>
Date: 12 Mar 91 23:08:24 GMT
References: <1991Mar11.182336.3274@vax5.cit.cornell.edu> <19536@brahms.udel.edu>
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