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Theory of Device Operation
4-16 C141-E221
Figure 4.7 Physical sector servo configuration on disk surface
OGB
Data are
a
IGB
ex
p
and
Servo frame
(134 servo frames per revolution)
CYLn + 1
CYLn CYLn
–
1 (n: even number)
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
W/R Recovery
Servo Mark
Gray Code
EVEN1
ODD
EVEN2
PAD
Diameter
direction
Circumference
Direction
Erase: DC erase
are
a