Computer system and method for accessing a protected partition of a disk drive that lies beyond a limited address range of a host computer's BIOS
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United States of America Patent
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Feb 10, 2004
Grant Date -
N/A
app pub date -
Feb 28, 2001
filing date -
Feb 28, 2001
priority date (Note) -
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status (Latency Note)
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Abstract
The invention may be embodied in a method and a related computer system. The computer system includes a host computer with a native drive-access routine having a limited address range, and a disk drive with a protected area that is inaccessible to a user's preferred operating system. The protected area also lies beyond the limited address range. The method includes receiving and detecting a command in the disk drive for reading a master boot record to initiate a bootload of the operating system. In response to detecting the command, the method includes transferring a drive-selected master boot record that, when executed in the computer system, initiates a process that enables address spoofing, loads an extended-address drive-access routine from the protected area using spoofed addresses within the limited address range, and executes the extended-address drive-access routine to replace the native drive-access routine for providing access to the protected area.
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