Re: Platinum 5.25" drive problem

["william strutts" <wrstrutts1@home.com>]

<noone@nowhere.net> wrote in message 3B4B440C.E0CFA845@nowhere.net">news:3B4B440C.E0CFA845@nowhere.net...
> Disk drive heads many times bult up a layer of particles from the media
> that can be magnatized.  This may cause problems as it obscures the
> intended magnetic signature to be read or applied to the disk.
>
> Ok, way back when they had bulk erasers and head demagnatizers, most
> heads had a steel jacket around them that could be magnatized.  Most
> tapes were crude iron oxide that took a good size magnetic field to
> utilize their storage capabilities.  The head jacket was also charged
> with containing the reletively huge magnetic pulses to be applied to the
> media.  These pulses were generally large enough to ovepower the
> signature left on the tapes by the bulk erasers or anything else.
>
> Today, most drives are not as powerful as the media is much more
> sensitive.  Like wise the heads are smaller and constructed
> differently.  I admit it is very unlikely that you will magnatize the
> head, but if you bulk erase a diskette you are looing for trouble.  The
> field on the bulk disk can erase neighbors and cause other difficulties.
>
> Thankx,
> Ed
>
>
Aen't we talking about 1978-1986 style Apple disk drives?  Wouldn't
they fall under the older category?
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William R. Strutts - wrstrutts1@home.com - Whatever!

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