Apparatus for locking a moveable part of a magnetic disk apparatus

A magnetic disk apparatus, comprising:

• a magnetic disk having a magnetic film formed on a substrate;
• a spindle motor for rotating said magnetic disk;
• a magnetic head provided for movement in facing a surface of said magnetic disk;
• a driving mechanism for positioning said magnetic head to a track determined on said magnetic disk;
• a magnetic writing/reading circuit by which said magnetic head conducts writing/reading of information along said track;
• an interface means for sending/receiving said information and signals for controlling said information to/from an external information processing device;
• and
• a locking mechanism operable during on-times of the magnetic disk apparatus, the locking mechanism locking the magnetic disk of said magnetic disk apparatus during non-use on-times of the magnetic disk apparatus, said locking mechanism releasing the locking of the magnetic disk during on-times when a specific command is issued from the external information processing device, and re-locking the magnetic disk during on-times again after processing of the specific command is completed, to keep a locking of the magnetic disk during any of the non-use on-times until a subsequent specific command is issued from the external information processing device.

A disk apparatus, comprising:

• a disk having information stored on a substrate;
• a spindle motor for rotating said disk;
• a head provided for movement in facing a surface of said disk;
• a driving mechanism for positioning said head to a track determined on said disk;
• a writing/reading circuit by which said head conducts writing/reading of information along said track;
• an interface means for sending/receiving said information and signals for controlling said information to/from an external information processing device;
• and
• a locking mechanism operable during on-times of the disk apparatus, the locking mechanism locking the disk of said disk apparatus during non-use on-times of the disk apparatus, said locking mechanism releasing the locking of the disk during on-times when a specific command is issued from the external information processing device, and re-locking the disk during on-times again after processing of the specific command is completed, to keep a locking of the disk during any of the non-use on-times until a subsequent specific command is issued from the external information processing device.