| 摘要 |
PROBLEM TO BE SOLVED: To prevent a normal data from being lost by overwriting an erroneous data in a buffer memory, and enhance reliability of a disk device, in the disk device provided with a serial interface and for inputting and outputting the data through the buffer memory. SOLUTION: In this disk device 100, a disk written data selecting part 116 stores a received data from a host 200 in an unused area of a buffer memory 103, a host interface control part 101 checks an error of the received data, and a disk written data selecting part 116 deletes a duplicated portion of the data stored previously in the buffer memory 103, when the data duplicated in a written position with that of an effective data from which the error portion is removed from the received data is stored in the buffer memory 103. COPYRIGHT: (C)2007,JPO&INPIT
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