×

Operating system update and boot failure recovery

  • US 7,340,638 B2
  • Filed: 01/30/2003
  • Issued: 03/04/2008
  • Est. Priority Date: 01/30/2003
  • Status: Expired due to Fees
First Claim
Patent Images

1. An improved operating system method comprising the steps of:

  • storing a primary operating system on a first disk drive accessible by a computing system wherein during normal operation the computing system accesses the primary operating system so that the primary operating system is the present operating system; and

    wherein the primary operating system is a bootable operating system;

    storing a mirror operating system on a second disk drive accessible by the computing system wherein the mirror operating system is a mirror image of the primary operating system;

    storing an updated operating system on a third disk drive accessible by the computing system wherein the updated operating system is a last-known-good image of the primary operating system;

    storing a first-boot operating system on a fourth disk drive accessible by the computing system wherein the first-boot operating system is an image of the primary operating system at the time of a first boot of the primary operating system;

    monitoring the operation of the present operating system;

    based on a set of boot instructions, designating one of the mirror operating system, the updated operating system, and the first boot operating system as an alternate operating system; and

    accessing the alternate operating system upon sensing an error in the operation of the primary operating system so that the alternate operating system becomes the present operating system.

View all claims
  • 3 Assignments
Timeline View
Assignment View
    ×
    ×