Patent ID: 6975468

Claim:
A method for use in tuning a disk drive, said disk drive including at least one data storage disk, said at least one data storage disk having a first data storage surface having concentric tracks with periodic servoing information, and a second data storage surface having concentric tracks with periodic servoing information, said disk drive also including a first transducer for writing digital data to said first data storage surface and a second transducer for writing digital data to said second data storage surface, said method comprising the steps of: (a) determining a first position error corresponding to the first transducer wherein the first position error is essentially a function of random noise associated with the disk drive; (b) generating a first off-track threshold value based on the first position error; (c) determining a second position error corresponding to the second transducer wherein the second position error is essentially a function of random noise associated with the disk drive; (d) generating a second off-track threshold value based on said second position error; and (e) storing said first and second off-track threshold values in a memory within the disk drive for use during subsequent write operations in the disk drive, said first off-track threshold value for use during write operations involving said first transducer and said second off-track threshold value for use during write operations involving said second transducer.