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AssigneeHitachi, Ltd.
InventorsMasahiro Nakayama, Hisaharu Takeuchi, Hisashi Takamatsu, Mamoru Tohchi, Akira Kurano
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A method of emulating an original record format for a new rotating storage device, including the steps of; (a) determining an original angular position (.alpha.) of a record according to a first recording format; (b) determining a desirable angular position (.beta.) for recording according to a second recording format having a higher recording density than that of the first recording format; (c) subtracting the desirable angular position from the original angular position to obtain a difference between the angles (.alpha.-.beta.); and (d) incrementing a gap length immediately before the data field of the record when the angular position exceeds a value corresponding to one unit of segment.
A method of emulating for a rotating storage device having a plurality of tracks divided into a plurality of segments, comprising the steps of:
An emulation method for changing a gap length between CKD fields in a record during realization of a first recording format storage device having a second recording format different from said first recording format of said first rotating storage device, wherein said second recording format has a recording density higher than that of said first recording format, each of said first and second recording formats having a variable length of records, the angular position from a start of each record being deducible from a data length of a record, said emulation method comprising the steps of:
A method of emulating for a rotating storage device for making a second rotating storage device to be able to have a recording format of a first rotating storage device, said second rotating storage device having recording specifications different from those of said first rotating storage device, including the steps of:
Dependencies are inferred from the claim text.