Method for re-imaging a computer system

• US 7,818,557 B2
• Filed: 05/24/2006
• Issued: 10/19/2010
• Est. Priority Date: 05/24/2006
• Status: Active Grant

• Current Assignee: Ivanti, Inc. (Ivanti Software, Inc.)
• Original Assignee: Absolute Software Corporation
• Inventors: Bestmann, Martin
• Primary Examiner(s): LAFORGIA, CHRISTIAN A
• Application Number:
  US11/439,711
• Publication Number:
  US 20070277033A1
• Time in Patent Office: 1,609 Days
• Field of Search: 713/100, 713/1, 713/2, 709/220
• US Class Current: 713/2
• CPC Class Codes: G06F 8/63 Image based installation; Cloning; Build to order

Abstract

The present disclosure relates generally to systems and methods for re-imaging a computer system. In one example, a method is provided for replacing an active system of a computer with a new image. The method may include copying files from the new image into a re-imaging directory on the active system. Processes of the active system that are not needed to keep the active system in a functioning state may be stopped. Files are moved from a top level space of the active system into a temporary directory after stopping the processes, and files from the re-imaging directory are moved into the top level space. The active system is then rebooted.

Claims

1. A method for replacing an original image on an active disk of a computer system with a new image comprising:

copying re-imaging files from the new image into a re-imaging directory on the active disk;

preserving at least a portion of the settings and files from the original image by copying the portion of the settings and files into an identical location in the re-imaging directory;

stopping processes not needed to prevent an operating system running on the active disk from becoming inoperable;

moving files and settings in the original image from a top level space of the active disk into a temporary directory using application programming interface (API) commands;

moving files and settings from the re-imaging directory into the top level space of the active disk using API commands; and

rebooting the computer system, wherein the computer system is not rebooted between the copying re-imaging files from the new image into the re-imaging directory and the moving files and settings from the re-imaging directory into the top level space.

2. The method of claim 1 further comprising logging off any user currently logged into the system prior to moving files and settings in the original image from the top level space of the active disk into the temporary directory.

3. The method of claim 1 further comprising:

mounting the new image on the computer system prior to copying the re-imaging files from the new image into the re-imaging directory; and

dismounting the new image after copying the re-imaging files from the new image into the re-imaging directory.

4. The method of claim 3 wherein the new image is dismounted prior to preserving at least the portion of the settings and files from the original image.

5. The method of claim 1 further comprising executing a script prior to stopping processes not needed to prevent the operating system on the active disk from becoming inoperable.

6. The method of claim 1 wherein preserving at least a portion of the settings and files from the original image includes preserving network settings of the active system.

7. The method of claim 1 wherein preserving at least a portion of the settings and files from the original image includes preserving user files.

8. The method of claim 1 further comprising deleting the temporary directory after rebooting the computer system.

9. The method of claim 1 wherein preserving at least the portion of the settings and files from the original image uses at least one tool that cannot be accessed after stopping processes not needed to prevent the operating system running on the active disk from becoming inoperable.

10. The method of claim 1 further comprising calling an agent prior to copying re-imaging files from the new image into the re-imaging directory on the active disk, wherein the agent enables the copying to be initiated from a remote location.

11. A method for replacing an active system of a computer with a new image comprising:

copying files from the new image into a re-imaging directory on the active system;

stopping processes of the active system that are not needed to keep the active system in a functioning state;

moving files from a top level space of the active system into a temporary directory after stopping the processes;

moving the files from the re-imaging directory into the top level space; and

rebooting the active system, wherein no reboot is needed between the copying files from the new image into the re-imaging directory and the moving files and settings from the re-imaging directory into the top level space.

12. The method of claim 11 further comprising preserving at least a portion of the files from the active system by copying them into an identical location in the re-imaging directory prior to stopping processes of the active system that are not needed to keep the active system in a functioning state.

13. The method of claim 11 further comprising preserving at least a portion of the files from the active system by copying them into an identical location in the re-imaging directory after stopping processes of the active system that are not needed to keep the active system in a functioning state.

14. The method of claim 11 further comprising:

mounting the new image; and

dismounting the new image after copying the re-imaging files from the new image into the re-imaging directory and prior to stopping the processes.

15. The method of claim 11 wherein moving files from the top level space of the active system into the temporary directory and moving the files from the re-imaging directory into the top level space is accomplished using system level application programming interface (API) calls.

16. The method of claim 15 further comprising loading a library needed by at least one of the API calls onto the active system.

17. The method of claim 11 further comprising identifying processes needed to keep the active system in a functioning state prior to stopping processes of the active system that are not needed to keep the active system in a functioning state.

18. The method of claim 17 wherein the identifying processes needed to keep the active system in a functioning state includes identifying all processes currently in use.

19. The method of claim 11 further comprising deleting the temporary directory after rebooting the active system.

20. The method of claim 11 wherein stopping processes of the active system that are not needed to keep the active system in a functioning state includes logging off any user currently logged into the active system.

21. The method of claim 11 further comprising informing the active system of boot parameters associated with the new image prior to rebooting the active system.

22. A method for replacing an active system of a computer with a new image comprising:

ensuring that any libraries needed for replacing the active system with the new image are loaded onto the active system;

copying files from the new image into a re-imaging directory on the active system;

logging off any user currently logged into the active system;

stopping processes of the active system that are not needed to keep the active system in a functional state;

moving files from a top level space of the active system to a temporary location using application programming interface (API) commands after stopping the processes;

moving the files from the re-imaging directory into the top level space using API commands; and

rebooting the active system, wherein the active system is not rebooted between the copying files from the new image into the re-imaging directory and the moving the files from the re-imaging directory into the top level space.

23. The method of claim 22 wherein the active system is not rebooted between the ensuring that any libraries needed for replacing the active system with the new image are loaded and the moving files and settings from the re-imaging directory into the top level space.