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| Title: | Atari ST, TT, & Falcon |
| Notice: | Please read note 1.0 and its replies before posting! |
| Moderator: | FUNYET::ANDERSON |
|
| Created: | Mon Apr 04 1988 |
| Last Modified: | Tue May 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1433 |
| Total number of notes: | 10312 |
392.0. "Magnets and floppy disks" by TEA::PETERS (Don Peters, CTS1-2/H6, 287-3742) Wed Feb 08 1989 21:07
At our local computer club meeting a few days ago, the subject of magnets
being dangerous to floppy disks came up. One person said he thought the
common folklore about magnets erasing floppy disks was just a myth.
Surprised at this, I went home, made a copy of an existing floppy, and
gathered a few magnets off of our refrigerator. I "wiped" the magnets
all over the cover of the floppy, noticing that the middle hub was magnetic.
Then I put the disk back in, and was I surprised to find that all the
software on the disk worked just fine! I repeated the experiment, but still
noticed no dropped data.
Granted, these magnets were not super strong, just your common ordinary
refrigerator magnets. I didn't have a stronger magnet handy for testing, or
I would have tryed it too. I guess now I don't have to be super careful
about my disks.
Has anyone else done any experiments like this? If so, what were the
results?
| T.R | Title | User | Personal
Name | Date | Lines |
|---|
| 392.1 | | LEDS::ACCIARDI | | Thu Feb 09 1989 00:02 | 17 |
|
Just out of curiosity, I once tried the same thing on an old floppy
using refrigerator magnets. The disk worked fine.
I then brought a small piece of Neodymium-Iron-Boron magnet home
from work. This is the latest and greatest high energy magnet
material, used in high-performance moving coil disk drive motors.
It probably has 100 X the energy product of cheap rubber magnets.
This chunk (about 1" square x .150" thick) could wipe out a disk
from a good four inches away. It could also twist my monitor display
from almost a foot away. I hope I'll be able to have normal children,
since I've worked with this stuff extensively.
Ed.
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