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Theory of Device Operation
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 (MHW2120BS only)
PAD
Diameter
direction
Figure 4.7 Physical sector servo configuration on disk surface
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