22 Dec
2006
22 Dec
'06
4:11 p.m.
On Fri, 22 Dec 2006, Tony Duell wrote:
Well, if I had a drive with, say, 2 surfaces, 2 heads
per surface, and
100 positions those heads could be moved to, I'd probably call it 100
cylinders, 4 heads, since logically it's the same as 4 surfaces with one
head per surface. Calling it 200 cylinders, 2 surfaces, while correct,
would seem to be as confusing as clalling it 400 tracks
I have a Seagate drive (225?) with a clear plastic cover (trade show demo
drive). It appears to have 17 sectors per track, 610? cylinders, 4 heads,
but only one platter! The computer treats it as if it had 2 platters,
with one head on each side of each platter.
On each side of the single platter, there are two heads!
One head "homes" (cylinder 0) near the outer edge, and the other homes
halfway to the middle.
--
Grumpy Ol' Fred cisin at xenosoft.com