Method and system for changing software access level within...

Details Method and system for changing software access level within... Method and system for changing software access level within...

2006-11-07

2006-11-07

Lee, Thomas (Department: 2115)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

C713S001000, C713S002000, C713S100000

Reexamination Certificate

active

07134006

ABSTRACT:
A method and system divides a media space, such as found in a hard drive or other mass storage device, into a portion directly accessible by all software and a portion inaccessible by all software except host Basic Input Output System (BIOS) code. A special procedure to access media space may include a special instruction or instruction set with or without a password to allow hard drive support for READ ONLY partitions, READ ONLY CD-ROM emulation, and other READ ONLY hard drive access requirements. The special procedure may user an expanded ATA command set, an expanded BIOS command set with System Management Mode, or code to temporarily unprotect at least a portion of the portion normally inaccessible by the software other than host BIOS code.

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