International Business Machines Corporation

Yuhji Kigami

Masayuki Murakami

Atsushi Kanamaru

Takashi Kuroda

Toshio Kakihara

Takahiro Saitoh

A system and method within a hard disk drive for transferring track sector information of a storage disk to a memory device. The system of the present invention includes a disk having multiple tracks, wherein each of the tracks includes at least one sector. The system further includes a memory device for storing sector identification data and user data. A drive data bus is utilized for transferring data between the storage disk and the memory. A controller is utilized to manages read and write operations to and from the storage disk, wherein the controller includes means for selecting either said user data or said sector identification data to be transferred to said memory device.

System and method for storing disk sector information

A disk drive and a method for controlling the disk drive in which an additional read from a medium can be performed as needed while minimizing the command overhead to the minimum. In a disk drive device 10, even if a read command is issued, and all the required data is stored in the cache memory such that the data transfer can be performed without the intervention of a local MPU 16, a HIC 15 performs the data transfer so as to leave the last one block and waits for the intervention of the local MPU 16. The local MPU 16 provides instructions to transfer the last one block when the preparation for the command termination is completed, and if a plurality of blocks of data to be transferred are remaining when the local MPU 16 instructs the HIC 15 to transfer the last one block, the HIC 15 executes all the data transfer without stopping the data transfer before the last one block, completing the command.

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Yamato, Japan

Yuhji Kigami