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Protected volume on a data storage device with dual operating systems and configurable access and encryption controls

  • US 7,757,100 B2
  • Filed: 05/23/2008
  • Issued: 07/13/2010
  • Est. Priority Date: 12/30/1998
  • Status: Active Grant
First Claim
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1. A method for providing a protected region of a data storage device associated with a computational device, the protected region being a region within which data cannot be accessed without proper authorization, the method comprising the steps of:

  • providing, in an unprotected region of the data storage device, a first operating system and operating system data associated with the first operating system;

    monitoring operating system data accessed by the computational device until a predetermined functionality of the first operating system becomes available;

    storing, in the protected region, the monitored operating system data;

    providing, in the protected region, a second operating system;

    transferring control of the computational device, when the predetermined functionality of the first operating system becomes available, from the first operating system to the second operating system;

    storing data in the protected region; and

    preventing access to the stored data in the protected region without access authorization.

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