Autonomous boot failure detection and recovery

• US 7,111,202 B2
• Filed: 06/28/2002
• Issued: 09/19/2006
• Est. Priority Date: 06/28/2002
• Status: Active Grant

• Current Assignee: HTC Corporation
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Cagle, John M., Bodner, James T., Zink, Daniel John
• Primary Examiner(s): Beausoliel, Robert
• Assistant Examiner(s): Wilson, Yolanda L.
• Application Number:
  US10/184,140
• Publication Number:
  US 20040078679A1
• Time in Patent Office: 1,544 Days
• Field of Search: 714/36, 713/1, 713/2
• US Class Current: 714/36
• CPC Class Codes: G06F 9/4406 Loading of operating system

Abstract

The disclosed embodiments provide an efficient method and apparatus for avoiding hangs when a computer system is unable to complete a proper boot. Booting is attempted from each device in a standard boot order list until a successful boot occurs. If the standard boot order list is exhausted without a successful boot, the boot sequence is retried after a predetermined time period.

Claims

1. A computer system comprising:

a processor adapted to execute program instructions;

a standard boot order list that identifies a plurality of devices from which to attempt to boot an operating system;

a system BIOS containing program instructions adapted to be executed by the processor, the system BIOS adapted to;

read the standard boot order list to identify a first one of the plurality of devices;

attempt to boot from the first one of the plurality of devices;

if the attempt to boot from the first one of the plurality of devices is unsuccessful, successively attempting to boot from subsequent devices of the plurality of devices until the boot order list is exhausted or a successful boot is completed; and

if the boot order list is exhausted with no successful boot attempt, successively and continuously attempting to boot from the plurality of devices contained in the boot order list without external intervention.

2. The computer system of claim 1 wherein the system BIOS is adapted to re-read the standard boot order list before attempting to boot from one of the plurality of devices a second time.

3. The computer system of claim 1 wherein at least one of the plurality of devices is accessible through a network connection.

4. The computer system of claim 3 wherein the network connection is accessible using the Pre-boot eXecution Environment standard.

5. The computer system of claim 1 wherein at least one of the plurality of devices is a hard drive.

6. The computer system of claim 1 wherein at least one of the plurality of devices is a CD ROM drive.

7. The computer system of claim 1 wherein at least one of the plurality of devices is a floppy disk drive.

8. The computer system of claim 1 wherein the system BIOS is adapted to delay for a predetermined time period before attempting to boot from the first one of the plurality of devices a second time.

9. The computer system of claim 1 wherein the system BIOS is adapted to display a message indicating that a boot sequence has failed before attempting to boot from the first one of the plurality of devices a second time.

10. A computer readable medium having computer readable instructions stored thereon, said computer readable instruction comprising:

code adapted to read a standard boot order list to identify a first one of the plurality of devices from which to attempt to boot an operating system;

code adapted to attempt to boot from the first one of the plurality of devices;

code adapted to successively attempt to boot from subsequent devices of the plurality of devices until the boot order list is exhausted or a successful boot is completed, if the attempt to boot from the first one of the plurality of devices is unsuccessful; and

adapted to successively and continuously attempt to boot from the plurality of devices contained in the boot order list without external intervention, if the boot order list is exhausted with no successful boot attempt.

11. The computer readable medium of claim 10, comprising code adapted to re-read the standard boot order list before attempting to boot from one of the plurality of devices a second time.

12. The computer readable medium of claim 10 comprising code adapted to access at least one of the plurality of devices through a network connection.

13. The computer readable medium of claim 12 wherein the network connection is accessible using the Pre-boot eXecution Environment standard.

14. The computer readable medium of claim 10 wherein at least one of the plurality of devices is a hard drive.

15. The computer readable medium of claim 10 wherein at least one of the plurality of devices is a CD ROM drive.

16. The computer readable medium of claim 10 wherein at least one of the plurality of devices is a floppy disk drive.

17. The computer readable medium of claim 10 comprising code is adapted to delay for a predetermined time period before attempting to boot from the first one of the plurality of devices a second time.

18. The computer readable medium of claim 10 comprising code adapted to display a message indicating that a boot sequence has failed before attempting to boot from the first one of the plurality of devices a second time.

19. A method of booting an operating system in a computer system, the method comprising the acts of:

accessing a standard boot order list to identify a plurality of devices from which to attempt to boot;

attempting to boot from a first one of the plurality of devices;

if the attempting to boot from the first one of the plurality of devices is unsuccessful, successively attempting to boot from subsequent devices of the plurality of devices until the boot order list is exhausted or a successful boot is completed and if the boot order list is exhausted with no successful boot attempt,

successively and continuously attempting to boot from the plurality of devices contained in the boot order list without external intervention.

20. The method claim 19, wherein the act of determining further comprises the act of reading the standard boot order list to see if any additional devices are listed in the standard boot order list.

21. The method of claim 19 further comprising the act of accessing the plurality of devices through a network connection.

22. The method of claim 21 wherein the network connection is accessible using the Pre-boot eXecution Environment standard.

23. The method of claim 19 wherein at least one of the plurality of devices is a hard drive.

24. The method of claim 19 wherein at least one of the plurality of devices is a CD ROM drive.

25. The method of claim 19 wherein at least one of the plurality of devices is a floppy disk drive.

26. The method of claim 19, further comprising the act of delaying for a predetermined time period before attempting to boot from the first one of the plurality of devices a second time.

27. The method of claim 19, further comprising the act displaying a message indicating that a boot sequence has failed before attempting to boot from the first one of the plurality of devices a second time.