On 2005-06-06, Terry Reedy <[EMAIL PROTECTED]> wrote:
> OT but I am curious: does a metallic case act as a metallic shield,
It depends on the metal and the case thickness. Thin
sheet-aluminum provides virtually no magnetic shielding. Some
good thick iron plate will provide shielding.
> so that the case needs to be opened to do this?
No.
> (Conversely, is a magnet near a disk drive a danger to it?)
Yes, if it's strong enough.
>> wiped everything, including control tracks, and played <bleep>
>> with the R/W head and positioning magnets.
>
> I take this to mean the the drive is non-functional and might
> have well been melted, except that demagnetising is cheaper.
Yup.
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