Let's see...we magnetize a small chunk of material, then pass the 
same "chunk" past a 'reading head', which one might visualize as a 
small coil of wire...and as it passes past the 'magnet', a small 
electric charge is generated in the coil of wire.....which is read as 
a 1 or a 0 (it is, or it isn't)......

We reverse that procedure to 'write' to the assembly of 'chunks', ie, 
hard drive or flash memory.........

So am EMF will wipe it all askew.....IMHO

lyle

At 12:27 PM 12/1/2011, Eric Cope wrote:
>EMPs affect more than just magnetic media. If the EMP puts a high 
>enough electric field across the flash cells, it can erase/write the SSD too.
>
>Magnets won't affect SSDs. Flash memory is electric field based.
>
>Eric
>
>On Dec 1, 2011, at 12:16 PM, Jim March <1.jim.march@gmail.com> wrote:
>
> > I know one way to find out: take an SSD full of data out of it's
> > computer and put it between a couple of hard disk magnets...
> >
> > Jim
> >
> > On Thu, Dec 1, 2011 at 11:56 AM, der.hans <PLUGd@lufthans.com> wrote:
> >> moin moin,
> >>
> >> discussing things at work and EMPs came up. It was almost on topic :).
> >>
> >> Anyway, an EMP would knock out data on hard drives, would it not?
> >>
> >> A co-worker says SSD is not magnetic, so would not be affected by an EMP.
> >> Is that correct?
> >>
> >> ciao,
> >>
> >> der.hans
> >> --
> >> #  http://www.LuftHans.com/        http://www.LuftHans.com/Classes/
> >> #  "It is appallingly obvious that our technology exceeds our humanity."
> >> #   -- Einstein
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