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Theory of Device Operation
4-16 C141-E262
Circumference
Direction
Erase: DC erase
area
CYLn + 1
CYL
n
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
Post code (particular models only)
PAD
Diameter
direction
Servo frame
(190 servo frames per revolution)
Figure 4.7 Physical sector servo configuration on disk surface