Data recording device and control method of same

Abstract

Embodiments of the present invention provide a data recording device that allows swift data access even under the state that data access is difficult, and a control method for the device. According to one embodiment, when receiving a data reading command from an external host in the state that a reading-difficult state is being detected, a Microprocessing Unit/Hard Disk Controller (MPU/HDC) of a magnetic disk device reads data related to the reading command from a magnetic disk for transmission to an external host and recording into a memory. Thereafter, when receiving another reading command from the external host for the same data, the data is read from the memory for transmission to the external host.

Dependencies are inferred from the claim text.