Disk drive and control method for disk drive
View Patent ↗After the power supply of a disk drive that uses a head to write data at any position on a disk or read data written at any position is turned on, the first initial conditions for the disk drive that are needed to receive a command from outside and execute the command are determined. The disk drive is then brought to a state in which it can receive the command but the spindle motor is not started. After the disk drive is brought to the state in which it can receive the command, the spindle motor is started and the second initial conditions including all initial conditions other than the first initial conditions are determined. Moreover, a control method for a disk drive that is implemented in the above disk drive is disclosed.
1. A disk drive that includes a spindle motor which drives a disk so that the disk will rotate and a voice coil motor which drives a head so that the head will reciprocate between a position inside the disk and a position outside it, and that uses the head to write data at any position on the disk or read data written at any position, the disk drive comprising:
a first initial-condition determination means for, after the power supply of the disk drive is turned on, determining only the first initial conditions for the disk drive which are needed to receive a command from outside and execute the command;
a command reception enabling means for bringing the disk drive to a state, in which the disk drive can receive the command, without starting the spindle motor; and
a second initial-condition determination means for, after the disk drive is brought to the state in which it can receive the command, starting the spindle motor and determining the second initial conditions including all initial conditions other than the first initial conditions.
2. A control method, for a disk drive which includes a spindle motor that drives a disk so that the disk will rotate and a voice coil motor that drives a head so that the head will reciprocate between a position inside the disk and a position outside it, and which uses the head to write data at any position on the disk or read data written at any position, wherein the control method comprises the steps of:
after the power supply of a disk drive is turned on, determining only the first initial conditions for the disk drive that are needed to receive a command from outside and execute the command;
bringing the disk drive to a state, in which the disk drive can receive the command, without starting the spindle motor; and
after the disk drive is brought to the state in which it can receive the command, starting the spindle motor and determining the second initial conditions including all initial conditions other than the first initial conditions.
3. A computer readable storage medium in which a program is stored, the program instructing a computer to:
after the power supply of a disk drive including a spindle motor that drives a disk so that the disk can rotate and a voice coil motor that drives a head so that the head can reciprocate between a position inside the disk and a position outside it is turned on, determine only the first initial conditions for the disk drive that are needed to receive a command from outside and execute the command;
bring the disk drive to a state, in which the disk drive can receive the command, without starting the spindle motor; and
after the disk drive is brought to the state in which it can receive the command, start the spindle motor and determine the second initial conditions including all initial conditions other than the first initial conditions.