On 6/8/2011 6:22, Francois Labreque wrote:
>  5.25" and 8" drives actually locked the door while the head was moving.

More precisely, on every model I saw, the door-open was a latch (i.e., 
something you turn like a doorknob or such rather than a push button), and 
the heads were attached to that. So moving the blocking bar out of the way 
of the drive slot also lifted the heads off the disk.

-- 
Darren New, San Diego CA, USA (PST)
   "Coding without comments is like
    driving without turn signals."

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