3-1/2" Floppy Market Cornered

From: David Holland <dholland_at_woh.rr.com>
Date: Wed May 21 13:40:00 2003

That clarifies it..

Gee, more junk my wife will love me for wanting to buy. :-)

Thanks,

David


On Wed, 21 May 2003, Fred Cisin (XenoSoft) wrote:

> "360K" diskettes are 300 Oersted. That is a measurement of magnetic
> coercivity. If you have no idea what that means, think of it as being
> like film speed in photography.
>
> "1.2M" diskettes are 600 Oersted. That is way too different from 300
> Oersted for interchange to work in either direction with
> "360K" diskettes.
>
> "720K" 3.5" diskettes are 600 Oersted.
>
> "1.4M" 3.5" diskettes are about 750 Oersted.
>
> 600 and 750 are close enough that you can almost get away with it. You
> can turn a good diskette of one into a crummy diskette of the other.
>
> What part of that is hard to understand?
> I especially liked the old ads for the punches, particularly the ad where
> the guy could "PROVE" that the diskettes were the same, because he had
> measured them with a micrometer.
>
>
> > In many of the cases, the disk is usually hosed after this and won't take
> > a format back to HD anymore.
> Fortunately, there is no damage that formatting can do that can't be
> undone by bulk erasing.
Received on Wed May 21 2003 - 13:40:00 BST