METHOD FOR SYSTEM RECOVERY AND APPARATUS SUPPORTING THE SAME

• US 20110126044A1
• Filed: 10/13/2010
• Published: 05/26/2011
• Est. Priority Date: 11/20/2009
• Status: Active Grant

• Current Assignee: Precision Biosensor Inc.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: KIM, Hyung Chan, LEE, Jong Rip
• Granted Patent: US 8,812,906 B2
• Time in Patent Office: Days
• US Class Current: 714/6.12
• CPC Class Codes: G06F 11/1433 during software upgrading
• CPC Class Codes: G06F 8/63 Image based installation; Cloning; Build to order
• CPC Class Codes: G06F 9/4401 Bootstrapping security arrangements therefor G06F21/57

Abstract

A system recovery method and an apparatus supporting the same are disclosed. A software image is downloaded, and a system is loaded with the downloaded software image, and the system is recovered by a software image used before the updating, if the system loading fails.

Claims

1. A system recovery method, comprising:

downloading a first software image;

loading a system with the first software image; and

recovering the system by a second software image used before the downloading, if the loading the system with the first software image fails.

2. The system recovery method according to claim 1, further comprising:

storing the first software image in a first storage area among a plurality of storage areas; and

setting a loading area, which stores a software image to be loaded on the system, to the first storage area,

wherein the loading the system comprises loading the system with the first software image stored in the first storage area.

3. The system recovery method according to claim 2, wherein at least one software images of a different version of a same software image, and is stored in a corresponding storage area among the plurality of storage areas, and

wherein the first and second software images are different versions of the same software image.

4. The system recovery method according to claim 2, wherein the plurality of storage areas are a plurality of physically or logically multiplexed storage media.

5. The system recovery method according to claim 4, wherein the plurality of physically multiplexed storage media comprise hard disks or flash memories.

6. The system recovery method according to claim 5, wherein the plurality of logically multiplexed storage media comprise logical partitions defined in each of physical storage media.

7. The system recovery method according to claim 3, further comprising determining a failure of the loading the system.

8. The system recovery method according to claim 7, further comprising changing the loading area to a second storage area which stores the second software image, if the loading the system with the first software image fails.

9. The system recovery method according to claim 8, wherein the second storage area is the loading area used before the downloading the first software image.

10. A system recovery method comprising:

booting a system using a software image stored in a loading area while the system is being used; and

if the booting the system fails, changing the loading area to another storage area and rebooting the system.

11. The system recovery method according to claim 10, wherein the loading area is one of a plurality of storage areas, to be loaded during the booting the system.

12. The system recovery method of claim 11, wherein different versions of the software image are stored in the plurality of storage areas.

13. The system recovery method of claim 12, wherein the rebooting the system comprises booting the system using a different version of the software image stored in the changed loading area.

14. A system recovery method comprising:

determining whether it is time to boot a system;

selecting a first software image to be loaded among a plurality of software images, if it is time to boot the system; and

booting the system using the first software image, at a first time, and

booting the system using a second software, at a second time.

15. The system recovery method according to claim 14, wherein the first software image and the second software image are stored in first and second storage areas, which are set to a loading area, which is loaded for the booting the system, at the first time and second time, respectively.

16. The system recovery method of claim 15, wherein the second software image is a different version of the first software image.

17. An apparatus for supporting system recovery, comprising:

a plurality of storage areas which store a plurality of software images, respectively; and

a boot loader which selects as a loading area a first storage area storing a first software image, among the plurality of storage areas, loads a system with the first software image, and, if the loading the system with the first software image fails, changes the loading area to a second storage area among the plurality of storage areas to recover the system with a second software image stored in the second storage area.

18. The apparatus according to claim 17, further comprising a watchdog timer which determines whether the loading the system loading fails.

19. The apparatus according to claim 17, wherein the second software image is a different version of the first software image.

20. The apparatus according to claim 17, wherein the second software image is used for booting the system before the loading the system with the first software image.

21. An apparatus for supporting system recovery, comprising:

a plurality of storage areas which store a plurality of software images, respectively; and

a boot loader which selects as a first storage area as a loading area storing a first software image, from among the plurality of storage areas to load a system with the first software image, at a first time, and changes the loading area to a second storage area storing a second software image among the plurality of storage areas to load the system with the second software image, at a second time.

22. The apparatus according to claim 21, wherein the second software image is a different version of the first software image.

23. The apparatus according to claim 22, wherein the plurality of storage areas are a plurality of physically or logically multiplexed storage media.