JPH023828A - Computer network system - Google Patents

Abstract

PURPOSE:To easily change an operating system by loading one among the operating systems through a network and raising a computer by using the operating system stored in the magnetic disk device of the computer. CONSTITUTION:When an operator selects an operating system A32 in a boot program 31, the operating system A32 raises the computer 1. When he selects the operating system stored in a storage-only device 2, operating system control information is read and the list of the operating systems stored in the storage- only device 2 are shown to an user, who is caused to select which operating system is to load on a magnetic disk 14, whereby the computer 1 is raised by using it. Thus, the operating systems can easily be switched.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a computer network system that switches between a plurality of operating systems.

Conventional technology Conventional computer systems have only one file to store the operating system, so it is necessary to change the operating system if application software does not work properly due to differences in operating system versions. When needed, it had to be done from system generation.

Problems to be Solved by the Invention Therefore, the conventional method of changing the operating system has the drawback of requiring time and effort.

Means for Solving the Problems The present invention provides one or more computers each having a central processing unit, a main storage device, an input/output device, and a magnetic disk device; It consists of a network that connects multiple operating systems and their management information in a storage-only device, an operating system in a computer's magnetic disk device, and a computer that uses the operating system to start up the computer. One of the operating systems stored in the dedicated device is loaded through the network, stored in the computer's magnetic disk device, and the user is asked to select whether to start up the computer using that operating system. A computer network system characterized by having a boot program.

According to the above-described configuration, the present invention executes a boot program when starting up a computer, loads one of the operating systems stored in the storage-only device through the network, and loads it into the magnetic disk device of the computer. By storing the operating system and starting up a computer using the operating system, the operating system can be easily changed.

Embodiment FIG. 1 is a configuration diagram of a computer network system according to an embodiment of the present invention. In Figure 1, 1 is a calculator;
2 is a storage-only device, 3 is a network, 11 is a central processing unit, 12 is a main storage device, 13 is an input/output device, 14 is a magnetic disk device, 21 is a central processing unit, 22 is a main storage device, 23 is an input/output device The device 24 is a magnetic disk device. FIG. 2a is a diagram showing the contents of the magnetic disk device 14.

In FIG. 2a, 31 is a boot program, and 32 is an operating system A. Boot program 31
Should I start up the computer 1 using the operating system A 32? Load one of the operating systems stored in the storage-only device 2 through the network 3, store it in the magnetic disk device 14 of the computer 1, and then The user is asked to select whether to start up the computer using the operating system. FIG. 2 is a diagram showing the contents of the magnetic disk device 24 of the storage-only device 2. In FIG. 2, 41 is operating system management information, 42 is operating system B, and 43 is operating system C. The operating system management information 41 is for managing the operating system stored in the storage-only device 2. Also operating system A32
and operating system B42 are completely the same, and operating system C43 is different from these.

The operation of the computer network system configured as above will be explained below. First, when trying to start up the computer 1, the boot program 31 is executed, and it is determined whether the computer 1 is started up by the operating system A32 or by the operating system stored in the storage-only device 2. let the person choose. If the user selects the operating system A32, the computer 1 is started up using the operating system A32. Furthermore, when the user selects an operating system stored in the storage-only device 2, the user first reads the operating system management information 41 and clearly shows the list of operating systems stored in the storage-only device 2 to the user. The user is asked to select whether to load the operating system onto the magnetic disk 14. operating system C
43 is selected, the operating system A of the magnetic disk device 14 is loaded through the network 3.
32 is stored, and the computer 1 is started using this.

As described above, according to this embodiment, the computer is started up using the operating system stored in the magnetic disk device of the computer, or one of the operating systems stored in the storage-only device is used to start up the computer. By providing a boot program that is loaded through the network, stored in the computer's magnetic disk drive, and then executed allowing the user to select whether to start up the computer using that operating system, it is possible to easily switch operating systems. Become.

As described in detail, according to the present invention, it is possible to easily switch between a plurality of operating systems, and the practical effects thereof are significant.

[Brief explanation of the drawing]

FIG. 1 is a configuration diagram of a computer network system according to an embodiment of the present invention, FIG. 2 is a memory map diagram of a magnetic disk device, and FIG. 3 is a memory map diagram of a magnetic disk device which is a storage-only device. 1... Computer, 2... Storage-only device,
3...Network, magnetic disk device, 11
... Central processing unit, 12 ... Main storage device, 13 ... Input/output device, 14 ... Magnetic disk device, 21 ... central processing unit, 22
. . . Main storage device, 23 . . . Input/output device, 24 . . . Magnetic disk device. Name of agent: Patent attorney Toshio Nakao and one other person

Claims (1)

[Claims] The storage-only device consists of one or more computers each having a central processing unit, main storage device, input/output device, and magnetic disk device, a storage-only device with a similar configuration to the computer, and a network connecting these devices. A plurality of operating systems and management information for the operating systems are stored in the computer, an operating system is stored in the magnetic disk device of the computer, and the computer is started up using the operating system, or is stored in the storage-only device. The computer has a boot program that loads one of the operating systems through the network, stores it in the magnetic disk device of the computer, and allows the user to select whether to start up the computer using the operating system. A computer network system characterized by the following.