On 01/17/2016 06:06 AM, J. P. Gilliver (John) wrote:

[snip]

To move the head into a normally not used part of the disc, so any
damage [to the disc] caused by "landing" didn't matter (which according
to posts in this thread may have also been textured to reduce stiction).

IIRC, I had a program called "autopark", which would move the heads to
"number of cylinders" after a certain amount of non-use. Since cylinder
numbers went from 0 to "number of cylinders"-1, "number of cylinders"
itself would be an unused area.

--
Mark Lloyd
http://notstupid.us/

"And then, one Thursday nearly two thousand years after one man had been
nailed to a tree for saying how great it would be to be nice to people
for a change..."