Fast booting a computing device to a specialized experience

• US 7,814,307 B2
• Filed: 03/16/2006
• Issued: 10/12/2010
• Est. Priority Date: 03/16/2006
• Status: Expired due to Fees

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Anderson, Jason Michael, Powell, Therron L.
• Primary Examiner(s): Lee; Thomas
• Assistant Examiner(s): Rahman; Fahmida
• Application Number:
  US11/377,747
• Publication Number:
  US 20070220246A1
• Time in Patent Office: 1,671 Days
• Field of Search: 713/1, 713/2, 713/100
• US Class Current: 713/2
• CPC Class Codes: G06F 9/4401 Bootstrapping security arrangements therefor G06F21/57
• CPC Class Codes: G06F 9/4406 Loading of operating system
• CPC Class Codes: G06F 9/45533 Hypervisors; Virtual machine monitors

Abstract

Described is a technology by which independent computing functions such as corresponding to separate operating systems may be partitioned into coexisting partitions. A virtual machine manager, or hypervisor, manages the input and output of each partition to operate computer system hardware. One partition may correspond to a special purpose operating system that quickly boots, such as to provide appliance-like behavior, while another partition may correspond to a general purpose operating system that may load while the special purpose operating system is already running. The computer system that contains the partitions may transition functionality and devices from one operating system to the other. The virtual machine manager controls which computer hardware devices are capable of being utilized by which partition at any given time, and may also facilitate inter-partition communication.

Claims

1. At least one computer-readable storage medium having computer-executable instructions, which when executed perform steps, comprising:

partitioning a hard disk in a non-virtualized manner to include a first special purpose operating system in a first partition and a second, different general purpose operating system in a second, different partition on the hard disk, each hard disk partition containing a set of executable operating system code configured to load the partition'"'"'s respective operating system from the hard disk partition into a computer system memory; and

managing input and output of each of the partitions to operate computer system hardware, the managing including;

receiving an indication from a user that a selected functionality is to be provided;

in response to receiving the indication, booting to the selected special purpose operating system configured to provide the user-selected functionality;

receiving a request for additional functionality;

determining that the requested additional functionality cannot be provided by the special purpose operating system; and

based on the determination, switching to the general purpose operating system that was at least partially loaded in the background while the special purpose operating system is running, wherein the general purpose operating system is partially loaded to the extent necessary to perform the requested additional functionality.

2. The computer-readable storage medium of claim 1 wherein booting to the special purpose operating system comprises loading a virtual machine manager and running the special purpose operating system above the virtual machine manager.

3. The computer-readable storage medium of claim 1 wherein the general purpose operating system coexists with the special purpose operating system.

4. The computer-readable storage medium of claim 1 having further computer executable instructions comprising terminating the special purpose operating system after transitioning at least one resource and/or experience to the general purpose operating system.

5. The computer-readable storage medium of claim 1 wherein the special purpose operating system operates a media-related device.

6. The computer-readable storage medium of claim 1 having further computer executable instructions comprising, buffering data while running the special purpose operating system, and transitioning from the special purpose operating system to the general purpose operating system, including providing the general purpose operating system with access to at least some buffered data.

7. The computer-readable storage medium of claim 1 wherein booting to the special purpose operating system comprises loading a virtual machine manager including at least one device driver.

8. The computer-readable storage medium of claim 1, wherein the special purpose operating system is booted in response to receiving the indication from the user that the selected functionality is to be provided, wherein the indication is received as a result of the user selecting a special purpose button indicating to the user which corresponding specific, limited function will be performed upon selection of the special purpose button.

9. The computer-readable storage medium of claim 1, wherein the special purpose operating system is booted in response to receiving the indication from the user that the selected functionality is to be provided, wherein the indication is received automatically upon detecting that optical media has been inserted into an optical media drive, the indication indicating that a media playing special purpose operating system is to be loaded.

10. A method comprising:

partitioning a hard disk in a non-virtualized manner to include a first special purpose operating system in a first partition and a second, different general purpose operating system in a second, different partition on the hard disk, each hard disk partition containing a set of executable operating system code configured to load the partition'"'"'s respective operating system from the hard disk partition into a computer system memory; and

managing input and output of each of the partitions to operate computer system hardware, the managing including;

receiving an indication from a user that a selected functionality is to be provided;

in response to receiving the indication, booting to the selected special purpose operating system configured to provide the user-selected functionality;

receiving a request for additional functionality;

determining that the requested additional functionality cannot be provided by the special purpose operating system; and

based on the determination, switching to the general purpose operating system that was at least partially loaded in the background while the special purpose operating system is running, wherein the general purpose operating system is partially loaded to the extent necessary to perform the requested additional functionality.

11. The method of claim 10 further comprising partitioning computing functions including loading a first set of executable code into one partition and executing the first set of code while a second set of executable code is being loaded into another partition.

12. The method of claim 11 wherein the first set of executable code comprises the special purpose operating system and the second set of executable code comprises the general purpose operating system that takes relatively longer to load than the special purpose operating system.

13. The method of claim 10 wherein managing the input and output of each partition comprises running a virtual machine manager to regulate the partitions'"'"' utilization of devices.

14. The method of claim 10 further comprising partitioning at least two independent computing functions into plurality of partitions comprising independently assigning at least two devices to two different partitions.

15. The method of claim 10 wherein managing the input and output of each partition comprises sharing at least one device between partitions, including unidirectional and/or bidirectional sharing of a device.

16. The method of claim 10 further comprising, controlling a power state of at least one hardware resource based on whether a selected partition of the plurality of partitions is loaded into the memory.

17. In a computing environment, a system comprising:

a device set containing at least one computer hardware component;

a plurality of coexisting partitions in executable memory, each partition containing an operating system;

and a management component for controlling which partition may utilize which component in the device set at a given time, the controlling including;

receiving an indication from a user that a selected functionality is to be provided;

in response to receiving the indication, booting to a first selected special purpose operating system configured to provide the user-selected functionality;

receiving a second indication from the user that a second, different selected functionality is to be provided;

in response to receiving the second indication and while the first special purpose operating system is running, booting to a different selected special purpose operating system configured to provide the different user-selected functionality;

while both special purpose operating systems are running, at least partially loading a general purpose operating system in the background;

receiving a request for additional functionality at the first special purpose operating system;

determining that the requested additional functionality cannot be provided by either of the special purpose operating systems;

based on the determination, switching to the general purpose operating system that was at least partially loaded in the background while both of the special purpose operating systems are running, wherein the general purpose operating system is partially loaded to the extent necessary to perform the requested additional functionality; and

performing the requested additional functionality by the general purpose operating system.

18. The system of claim 17 wherein the device set includes at least one of a video playing mechanism, an audio playing mechanism, a video recording mechanism, an audio recording mechanism, a data storage mechanism, and an input device.

19. The system of claim 17 wherein at least one partition is loaded and ready for execution while another partition is being loaded.

20. The system of claim 17 wherein the management component comprises a virtual machine manager that operates between each partition and the device set.

21. The system of claim 17 further comprising means for communicating information between at least two partitions.