| 摘要 |
A magnetic disk apparatus comprises a magnetic disk for recording information thereon; a power supply; an electric motor for rotating the magnetic disk by means of electric power which is supplied from the power supply; a floating type magnetic head for recording/reproducing the information onto/from the magnetic disk; and a carriage for moving and positioning the magnetic head on the magnetic disk by means of electric power supplied from the power supply, wherein when the rotation of the magnetic disk is started, the magnetic head rises from a predetermined CSS position on the magnetic disk, and when the rotation of the magnetic disk is stopped, the magnetic head comes to rest at the CSS position. The magnetic disk apparatus is characterized by including an additional carriage enabling the magnetic head to move between the CSS position and a standby position near the CSS position where a CSS operation cannot be executed, so that (1) when the electric power from the power supply to the electric motor is shut off and the rotation of the magnetic disk is stopped, the magnetic head is moved from the CSS position to the standby position, and (2) when the electric power is supplied from the power supply to the electric motor, the magnetic head is moved from the standby position to the CSS position prior to the rotation of the magnetic disk.
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