Method of altering a computer operating system to boot and...

Electrical computers and digital processing systems: support – Digital data processing system initialization or configuration – Loading initialization program

Reexamination Certificate

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Details

C713S001000

Reexamination Certificate

active

06993649

ABSTRACT:
A modern computer operating system is altered to boot and run from a protected medium such as a CD-ROM. Files and configuration information are copied from a fully configured and operational OS to a hard drive image file. File system filters and device drivers are added that implement an emulated read-write hard disk drive by servicing initial read requests from the image file, and write requests and read requests to previously written data, from a written disk sector database. The OS is altered to load the filters and drivers during boot, and to subsequently run from the emulated read-write hard disk drive. The hard drive image file is then placed on a bootable protected medium.

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