Methods for self-servowriting using write-current variation

A method for improved self-servowriting, comprising:

• reading a servo reference pattern using a first head on an actuator arm assembly;
• determining the offset of a second head on the actuator arm assembly;
• and
• writing information from the servo reference pattern onto a rotatable medium using the second head, the information being written with a width such that the offset is removed for at least one edge of the information being written.

A method for improved self-servowriting on a hard disk drive, comprising:

• reading a servo reference pattern using a first head on an actuator arm assembly, the disk drive having at least one disk and the servo reference pattern being located on a first surface of the at least one disk;
• determining the offset of a second head on the actuator arm assembly, the offset determined by the desired position of the second head relative to a second surface of the at least one disk as determined at least in part by the servo reference pattern;
• and
• writing information from the servo reference pattern onto the second surface using the second head, the information being written with a width such that the offset is removed for at least one edge of the information being written.