Systems for selective multi-pass servowriting and self-servowriting

A system for writing position information to a rotating medium, comprising:

• a rotatable medium capable of storing information written to the rotatable medium;
• a write element capable of writing information to the rotatable medium;
• and
• a control mechanism adapted to rotate the rotatable medium and position the write element relative to the rotatable medium, such that the write element can:
• write a plurality of servo tracks to a rotatable storage medium, wherein the position of each servo track is defined by an edge of a first servo burst and a complimentary edge of a second burst, and wherein the first servo burst is written in a first revolution of the rotatable storage medium, and the first burst is trimmed on a second revolution, the second servo burst also being written on the second revolution;
• and
• write a plurality of data tracks to a rotatable storage medium, wherein the position of each data track is defined by an edge of a third servo burst and a complimentary edge of a fourth servo burst, and wherein the third servo burst is written in a third revolution of the rotatable storage medium, the third servo burst is trimmed in a fourth revolution, and the fourth servo burst is written in a fifth revolution.

A system for writing position information to a rotating medium, comprising:

• a rotatable medium capable of storing information written to the rotatable medium;
• a write element capable of writing information to the rotatable medium;
• and
• a control mechanism adapted to rotate the rotatable medium and position the write element relative to the rotatable medium, such that the write element can:
• write at least a portion of a first burst pattern during a first pass of a write element over a rotating medium;
• trim at least a portion of a first burst pattern during a second pass of the write element;
• write at least a portion of a second burst pattern during a third pass of the write element if the first burst pattern and second burst pattern are used to define a track centerline;
• and
• write at least a portion of a second burst pattern during the second pass of the write element if the first burst pattern and second burst pattern are used to define a track boundary line.

A system for writing position information to a magnetic hard disk, comprising:

• a magnetic hard disk of storing information written to the magnetic hard disk;
• a read/write head capable of writing information to the magnetic hard disk;
• and
• a control mechanism adapted to rotate the magnetic hard disk and position the read/write head relative to the magnetic hard disk, such that the read/write head can:
• write a first servo burst during a first pass of a read/write head over a magnetic hard disk;
• trim the first servo burst during a second pass of the read/write head, the first servo burst being trimmed so as to have a trimmed edge in about a predetermined position on the magnetic disk;
• write a second servo burst during the second pass of the read/write head if the first servo burst and second servo burst are used to define a track boundary;
• and
• write a second servo burst during a third pass of the read/write head if the first servo burst and second servo burst are used to define a track centerline, wherein the trimmed edge of the first servo burst and an adjacent edge of the second servo burst define a position that can be used to adjust the radial location over the disk of the read/write head during subsequent passes over those bursts.

A system for writing position information to a magnetic hard disk, comprising:

• means for writing a first servo burst during a first pass of a read/write head over a magnetic hard disk;
• means for trimming the first servo burst during a second pass of the read/write head, the first servo burst being trimmed so as to have a trimmed edge in about a predetermined position on the magnetic disk;
• means for writing a second servo burst during the second pass of the read/write head if the first servo burst and second servo burst are used to define a track boundary;
• and
• means for writing a second servo burst during a third pass of the read/write head if the first servo burst and second servo burst are used to define a track centerline.