🚀 go-pugleaf

In a previous article, Articulate Mandible <dibbe...@highsoft.com> said:
[magnet on the floppy done to a 3.5" floppy]
>> I think the whole magnet thing is just a big hoax. ;)
>
>Try putting an Ur-floppy (the eight incher) or a five-and-a-quarter-incher
>to the same test and get back to us.

Note that the magnetic coercitivity (can't remember the technical term) for a
high density (1.2Mb) 5.25" floppy is a lot higher than for a double density
(360Kb) 5.25" floppy.  That means it takes a much higher magnetic field to
change the information on the floppy.  One consequence of this is that if you
took a disk that had been formatted to 1.2Mb and stuck it in a 360Kb drive,
you wouldn't be able to reformat it, even though a blank unformatted disk from
the same box would format ok in the 360Kb drive.  Another consequence of this
is that the "fridge magnet" treatment probably has a much greater likelyhood
of ruining a 360Kb disk than a 1.2Mb disk.

--                             |
Paul Tomblin, PP-ASEL         _|_        Rochester Flying Club web page:
                         ____/___\____   http://www.servtech.com/public/
                  ___________[o0o]___________   ptomblin/rfc.html
ptom...@xcski.com         O   O    O