Modifiable partition boot record for a computer memory device

• US 5,944,820 A
• Filed: 10/15/1997
• Issued: 08/31/1999
• Est. Priority Date: 10/15/1997
• Status: Expired due to Term

• Current Assignee: Dell Computer Corporation (Dell Technologies Inc.)
• Original Assignee: Dell USA LP (Dell Technologies Inc.)
• Inventors: Beelitz, Alan E.
• Primary Examiner(s): Butler, Dennis M.
• Assistant Examiner(s): Hossain, Abu
• Application Number:
  US08/951,135
• Time in Patent Office: 685 Days
• Field of Search: 395/651, 395/550, 395/551, 364/8, 713/1, 713/2, 713/100
• US Class Current: 713/1
• CPC Class Codes: G06F 21/80 in storage media based on magnetic or optical technology, e.g. disks with sectors preventing unauthorised reproduction or copying of disc-type recordable media G11B20/00
• CPC Class Codes: G06F 2211/1097 Boot, Start, Initialise, Power
• CPC Class Codes: G06F 9/4406 Loading of operating system

Abstract

A system and method for providing a modifiable partition boot record for a memory device of a computer. The computer includes a processor for loading and running boot code and operating code. The memory device, which can be accessed by the processor, includes at least two partitions, the first partition initially being active and having a type that is not recognized by the operating system code and the second partition initially being inactive. When the computer boots up, the processor first accesses the active partition. Once the active partition has been accessed, the processor then converts the type for the active partition to a visible type, i.e, a type that is recognizable to the operating system code. When the operating system code is loaded, it recognizes the type for the active partition and therefore does not encounter an error. Once the operating system code has been loaded, the processor converts the type for the active partition back to a non-visible type. Because the operating system is now loaded, the processor can perform other tasks. For example, the processor can perform an EBTS program that prompts a user for acceptance of a software license, the software being stored in the second partition. If the user accepts the software license, the processor then designates the second partition as active.

Claims

1. A computer comprising:

at least one processor for loading and running boot code and operating code;

at least one storage device accessible by the processor, the storage device being separated into at least two partitions, the first partition initially being designated as active and having a type that is not recognized by the operating code; and

wherein, when the processor is running the boot code and the first partition is active, the processor runs a type changing routine; and

wherein the type changing routine instructs the processor to convert the type of the first partition to a type that is recognizable by the operating code so that when the operating code is run, the operating code recognizes the first partition.

2. The computer of claim 1 wherein the type changing routine is stored in the first partition on the storage device.

3. The computer of claim 1 wherein the operating code is stored in the first partition on the storage device.

4. The computer of claim 1 wherein, after the operating code has recognized the first partition, the type-changing routine instructs the processor to convert the type of the first partition to a type that is not recognizable by the operating code.

5. The computer of claim 4 further comprising a program stored in the first partition on the storage device;

and wherein if a user interacts with the program in a predetermined manner, the type changing routine will designate the second partition as active.

6. The computer of claim 5 wherein the program is an electronic break-the-seal program for licensing software located in the second partition.

7. The computer of claim 5 further comprising a user interface connected to the processor and wherein the user interaction is received through the user interface.

8. The computer of claim 1 wherein the storage device also includes a master partition table for storing the type of the first partition.

9. The computer of claim 4 further comprising a program stored in the second partition on the storage device;

and wherein if a user interacts with the type-changing routine in a predetermined manner, the type-changing routine will instruct the second partition to be designated as active so that the user may access the program.

10. The computer of claim 9 wherein if the user does not interact with the type-changing routine in the predetermined manner, the type-changing routine will not instruct the second partition to be designated as active so that the user may not access the program.

11. In a computer having a processor for running an operating system and storage accessible by the processor, a method for controlling access to software on the storage, the method comprising:

(a) before the computer is booted-up;

(i) separating the storage into at least two partitions, wherein the first partition is active;

(ii) storing the software in the second partition;

(iii) designating the first partition as a non-visible type; and

(b) when the computer is booted-up;

(i) accessing by the processor the active partition;

(ii) re-designating the active partition as a visible type;

(iii) loading the operating system;

(iv) converting the active partition back to the non-visible type;

(v) determining if the software may be accessed;

(vi) if the software may be accessed, designating the second partition as active.

12. The method of claim 11 wherein step (b)(v) is performed by prompting a user to accept a software license and determining whether the user responded to the prompt in a predetermined manner.

13. The method of claim 11 wherein the storage device includes a master partition table for storing the type of the first partition.

14. The method of claim 11 wherein the storage device includes boot code for booting the computer.

15. The method of claim 11 wherein step (a) further comprises:

(iv) storing at least part of the operating system in the first partition.

16. The method of claim 11 wherein step (a) further comprises:

(iv) storing at least part of the operating system in the second partition.

17. In a computer having a processor for running an operating system and a storage device that is accessible by the processor and separated into at least two partitions, the first partition being active and having a non-recognizable type and the second partition containing a piece of software, a system for allowing a user to have controlled access to the piece of software, the system comprising:

means for enabling the processor to access the active partition;

means for converting the type of the active partition to one that is recognizable by the operating system before the processor loads the operating system;

means for loading the operating system;

means for converting the type for the active partition back to a non-recognizable type after the operating system has been loaded;

means for determining if the user may access the piece of software;

means for designating the second partition as active in response to a determination that the user may access the piece of software.

18. The system of claim 17 wherein the means for determining prompts the user to accept a software license and determines whether the user responded to the prompt in a predetermined manner.

19. The system of claim 17 wherein the storage device includes a master partition table for storing the type of the first partition.

20. The system of claim 17 wherein at least part of the operating system is stored in the first partition.

21. The system of claim 17 wherein at least part of the operating system is stored in the second partition.