System and method for emulating disk tracks to maintain data for

Details System and method for emulating disk tracks to maintain data for System and method for emulating disk tracks to maintain data for

1994-06-14

1996-12-31

Lim, Krisna

Dynamic magnetic information storage or retrieval

Head

Core

360 50, 360 48, G06F 1300, G06F 500

Patent

active

055903118

ABSTRACT:
The invention relates to a disk track emulation system and method, whereby, when a disk device is replaced by a new disk device having a disk track with a data format different from that of the conventional device, a program in a conventional host device can be used as it is, in the same way as in the conventional disk device, without reforming the program. To maintain the a compatibility, using the characteristic that the data format is divided by a unit called a cell having a constant number of bytes, and writing, into a home address area and a count area in the new data format, cell position data with the new data format, and compatible cell position data with respect to the conventional data format in which the compatibility should be maintained.

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