| 摘要 |
PURPOSE:To quicken the saving in a file system by storing a write address subjected to write processing and saving only a data at the stored write address. CONSTITUTION:When write processing is applied by a write instruction from a host to a magnetic disk device 5 where all data are saved, the write address for the write processing is stored and only the data for the stored address is saved. Thus, since only the required data of a file is saved while not all the data of the magnetic disk device 5 are saved, the saving is quickened.
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