Automatic determination of geometric translation parameters for a disk device
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United States of America Patent
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N/A
Issued Date -
Aug 4, 2005
app pub date -
Jan 30, 2004
filing date -
Jan 30, 2004
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Software image portability may be achieved automatically: A host computer reads geometric parameters from a data structure in a boot record of a disk device containing a software image. The computer adopts those parameters as geometric translation parameters for use when accessing the software image. This may be done without the need for intervention by a computer user. In one implementation, the host computer reads the Master Boot Record from the disk device; finds a usable entry in the partition table of the Master Boot Record; reads a sector specified by the Starting LBA field in the usable partition table entry; assigns a number of sectors per track equal to the word found at offset 18h in the BIOS Parameter Block of the sector; and assigns a number of heads equal to the word found at offset 1Ah in the BIOS Parameter Block of the sector.
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