System and method for splitting an image across multiple computer readable media

• US 7,260,738 B2
• Filed: 06/17/2002
• Issued: 08/21/2007
• Est. Priority Date: 06/17/2002
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Cohen, Jason, Jhanwar, Raj, Burkhardt, Ryan
• Primary Examiner(s): Iqbal; Nadeem
• Application Number:
  US10/172,862
• Publication Number:
  US 20030233379A1
• Time in Patent Office: 1,891 Days
• Field of Search: 714/6, 714/38, 714/3, 382/114, 382/100, 382/173, 382/174, 705/517, 705/520, 707/104.1, 707/101, 707/102, 707/100
• US Class Current: 714/6.31
• CPC Class Codes: G06F 16/10 File systems; File servers

Abstract

A software tool and method in which a source image is split into and spans across two or more image pieces having a data structure which fits onto a computer readable medium having an available storage capacity which is smaller than the size of the source image. Also, software tool and method which combines two or more image pieces of a source image on a destination medium into a re-combined image having a data structure corresponding to the source image.

Claims

1. A software tool stored on a computer storage medium which splits a source image into two or more image pieces, each of which fits onto a computer readable medium having an available storage capacity which is smaller than the size of the source image, said software tool comprising:

a selecting tool responsive to user input for designating which files of the source image to be included in each image piece;

a splitting tool which groups the designated files into their corresponding image piece, wherein each of the image pieces is adapted to include a plurality of files, each of which can be opened or mounted so that each of the plurality of files within each image piece can be added, removed or extracted from the image piece independent of any changes to the other image pieces of the source image and without reassembly of the image pieces; and

a chaining tool which labels each of the image pieces.

2. The tool of claim 1 wherein each of the image pieces is adapted to be independent of each other and comprises a restorable portion of the source image so that the image piece can be modified, updated or restored without reassembly of the image pieces.

3. The tool of claim 1 wherein one or more of the image pieces includes a bootable combination of files.

4. The tool of claim 3 wherein the bootable combination of files are a unique portion of one of the image pieces so that the files do not take up duplicate space on the computer readable medium on which the image piece is stored.

5. The tool of claim 1 wherein each of the image pieces includes all files required by a particular application so that the one image piece is capable of initiating operation of the particular application.

6. The tool of claim 5 wherein the particular application is a setup engine so that the one image piece is capable of initiating setup.

7. The tool of claim 1 wherein related component resources are included on a particular one of the image pieces so that the source image can be restored on a computer with a minimum amount of changing between the computer readable media storing the image pieces of the source image.

8. The tool of claim 1 wherein the chaining tool creates a unique header for each of the image pieces and a metadata file for each of the image pieces.

9. The tool of claim 1 wherein undesignated files of the image are stored as part of any of the image pieces until a limit for the size of the computer readable medium of the image piece is reached.

10. The tool of claim 1 wherein the chaining tool creates a unique signature for each of the image pieces.

11. The tool of claim 1 wherein each of the image pieces is part of a recovery media and wherein each of the image pieces includes a minimal bootable operating system.

12. A method of splitting a source image into two or more image pieces, each of which fits onto a commuter readable medium having an available storage capacity which is smaller than the size of the source image, said method comprising:

designating which files of the source image to be included in each image piece;

grouping the designated files into their corresponding image pieces; and

labeling the image pieces, including;

writing a header for the image piece wherein the header corresponds to the designated files;

writing a metadata for the image piece wherein the metadata corresponds to the designated files;

copying priority data which corresponds to the designated files from the source image to the image piece;

copying non-priority data from the source image to the image piece; and

adding a signature to the image piece which signature corresponds to the contents of the image piece.

13. The method of claim 12 wherein said grouping comprises creating the image piece by copying the files from the source image to the computer readable medium of the image piece.

14. The method of claim 12 wherein said designating comprises specifying the size of each of the image pieces and specifying which files of the source image to be included in each of the image pieces.

15. The method of claim 12, wherein one or more computer readable media have computer-executable instructions for performing the method of claim 12.

16. A method of creating from a source image an image piece which fits onto a computer readable medium having an available storage capacity which is smaller than the size of the source image, said method comprising:

specifying the size of the image piece;

designating which files of the source image to be included in the image piece;

creating the image piece from the designated files;

writing a header for the image piece wherein the header corresponds to the designated files;

writing a metadata for the image piece wherein the metadata corresponds to the designated files;

copying priority data which corresponds to the designated files from the source image to the image piece;

copying non-priority data from the source image to the image piece; and

adding a signature to the image piece which signature corresponds to the contents of the image piece.

17. A software tool stored on a computer storage medium having computer executable components for combining two or more image pieces of a source image into a re-combined image corresponding to the source image, wherein each of the image pieces is on a computer readable medium having an available storage capacity which is smaller than the size of the source image, and wherein the re-combined image is stored on a destination computer readable medium, said software tool comprising:

a copying tool responsive to user input for copying files of the image pieces onto the destination computer readable medium;

a combining tool which combines the copied files into the re-combined image on the destination computer readable medium; and

a chaining tool which labels the re-combined image on the destination computer readable medium.

18. The tool of claim 17 wherein related component resources are included on the same image piece so that the source image can be re-combined on the destination computer readable medium with a minimum amount of changing between the computer readable media storing the image pieces of the source image.

23. The method of claim 19, wherein one or more computer readable media have computer-executable instructions for performing the method of claim 18.

25. The method of claim 24 wherein one or more computer readable media have computer-executable instructions for performing the method of claim 18.

19. A method of combining two or more image pieces of a source image into a re-combined image corresponding to the source image, wherein each of the image pieces is stored on a computer readable medium having an available storage capacity which is smaller than the size of the source image, and wherein the re-combined image is on a destination computer readable medium, said method comprising:

copying files of the image pieces onto the destination computer readable medium in response to user input;

combining the copied files into the re-combined image on the destination computer readable medium; and

labeling the re-combined image on the destination computer readable medium.

20. The method of claim 19 wherein said labeling comprises:

writing a header for the recombined image from each image piece;

writing a metadata for the recombined image for each image piece;

copying priority data from the image pieces to the recombined image;

copying non-priority data from the image piece to the recombined image; and

adding a signature to the recombined image which signature corresponds to the contents of the recombined image.

21. The method of claim 19 wherein said grouping comprises creating the image piece by imaging the files from the source image to the computer readable medium of the image piece.

22. The method of claim 19 wherein said designating comprises specifying the size of each of the image pieces and specifying which files of the source image is included in each of the image pieces.

24. A method of combining two or more image pieces of a source image into a re-combined image corresponding to the source image, wherein each of the image pieces is on a computer readable medium having an available storage capacity which is smaller than the size of the source image, and wherein the re-combined image is on a destination computer readable medium, said method comprising:

imaging the re-combined image from the image pieces;

writing a header for the re-combined image wherein the header corresponds to the files of the re-combined image;

writing a metadata for the image piece wherein the metadata corresponds to the files of the re-combined image;

adding a signature to the re-combined image which signature corresponds to the contents of the re-combined image.