Patent ID: 6717757
Filing Date: 2004-04-06
Classification: G11B

Abstract:
A disk drive comprising:at least one data storage disk having a plurality of substantially concentric tracks for storing digital data, said at least one data storage disk having at least two data storage surfaces; at least two transducers for use in writing digital data to said at least two data storage surfaces, said at least two transducers including a first transducer corresponding to a first data storage surface and a second transducer corresponding to a second data storage surface; an actuator assembly coupled to said at least two transducers for use in controllably positioning said at least two transducers with respect to said at least one data storage disk, said actuator assembly including an actuator arm assembly for supporting said at least two transducers and a voice coil motor for imparting motion to said actuator arm assembly in response to a control signal; a servo control unit for generating said control signal for use in positioning said at least two transducers with respect to said at least one data storage disk; and a memory for storing write condition information to be used in subsequent write operations for each of said at least two transducers, said write condition information defining a positional range within which a transducer must be located relative to a target track before data can be written to a disk using a corresponding transducer, said memory including a first write condition corresponding to said first transducer and a second write condition corresponding to said second transducer, wherein the first write condition is different from said second write condition.