On Thu, 17 Nov 2011 21:36:50 +0000, choro wrote:
> Did you rest it on a strong magnet, I asked him. No, he said. Did you
> put it near a strong magnet, I asked. No, he said. Well, I said, I can't
> see how this could have happened unless the files were either shredded
> or the stick itself was degaussed.
>
> Well, he then admitted, I think I put it in my pocket together with some
> of those brown strip magnets that they use on notice boards, he said.
> But those are quite weak magnets, he innocently added!!!
You can try, but I can't get a magnet of any strength I can find to affect
the contents of a flash drive, much less a fridge magnet. YMMV but I kinda
doubt you can erase a flash drive that way, except for maybe the most
extreme of conditions, and I still question that. Maybe with a EM pulse
from a nuclear explosion

Hopefully we'll never have that tested.
Degaussing involves a reversing and diminishing magnetic field. You can
magnetize with a static or non-reversing field but that is not degaussing.
I get what you're saying, but the terminology is wrong. Degaussing is to
de-magnetize something (to a minimal state). One cannot do that with a
magnet in a pocket. Additionally as flash memory is not magnetic and has no
magnetic polarity, I see no way to demagnetize it.
--
HK