Head switch seek on disc drives with multiple recording heads

A disc drive comprising:

• a base;
• a disc rotatably attached to the base, servo information being stored on one of the surfaces of the disc at a first circumferential position and at a second circumferential position and servo information being stored on the other of the surfaces of the disc at substantially the same first circumferential position and at substantially the same second circumferential position, one of the surfaces of the disc having a first track and a second track and the other of the surfaces having a third track and a fourth track;
• an actuator having a first transducer for reading and writing to the first and second track and a second transducer for reading and writing to the third and fourth track;
• and
• a computer usable storage medium having control information stored thereon for causing a suitably programmed disc drive to seek from a first track on the disc to a second track on a disc using the transducer for reading the third and fourth track on the disc.

A disc drive comprising:

• a base;
• a disc rotatably attached to the base, servo information being stored on each of the surfaces of the disc, one of the surfaces of the disc having a first track and a second track and the other of the surfaces having a third track and a fourth track;
• an actuator having a first transducer for reading and writing to the first and second track and a second transducer for reading and writing to the third and fourth track;
• and a computer usable storage medium having control information stored thereon for causing a suitably programmed disc drive to seek from a first track on the disc to a second track on a disc using the transducer for reading the third and fourth track on the disc, wherein the control information on the computer usable storage medium performs:
• seeking between the third and fourth tracks with the second transducer;
• and
• switching from a second transducer head to a first transducer.

A disc drive comprising:

• a base;
• an actuator rotatably attached to the base, the actuator having a first end and a second end and further comprising a transducing head attached to the other of the first or second ends of the actuator;
• at least one disc rotatably attached to the base, the disc having a first surface and a second surface;
• and
• means for performing a seek between tracks on a first surface while using information stored on the second surface and the transducing head on the second surface.