A disk drive comprising a moveable head, a disk, and a servo controller to
control track following operations is disclosed. The disk includes a
plurality of tracks in which a substantial majority of the tracks include
a plurality of servo sectors utilized in track following operations. The
servo controller implements a program during power-up to: calculate servo
position correction values using a set of servo position correction
coefficients that have been pre-selected for the disk drive based upon
the class of disk drive in which the set of servo position correction
coefficients have been coded into the program; store the servo position
correction values in a pre-determined servo position correction look-up
table in memory; and utilize the pre-determined servo bursts correction
look-up table to track follow on a reserved track of the disk.