Samsung Electronics Co., Ltd.

Seagate Technology Incorporated

Jin Wan Jun

Chong Hyun Lee

Jin Hyuk Kim

Ho Suk Yum

Jae-Ki Hong

Dong Hyuk Ihm

A method of operating a data storage device is provided. Size information of write data and write speed information is received from a host. A first write area is determined to store the write data based on the size information and the write speed information. The write data is received from the host. The write data is written to the first write area using at least one method selected among a plurality of write methods according to the write speed information.

Method of operating data storage device using size and write speed information and method of operating system including the same

There is disclosed a hard disk drive and an operation method thereof. A method of operating a hard disk drive according to the present invention may include (a) loading drive data required to drive the hard disk drive from a maintenance cylinder area contained in a disk to a memory; and (b) writing test data output from a head into a spare area contained in the maintenance cylinder area, wherein the steps (a) and (b) are carried out within a ready time.

Hard disk drive, method for operating the same, and computer system having the same

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Seoul, South Korea

Jin Wan Jun