TWI518594B - Computer system and activation method for computer system - Google Patents

Description

Computer system and computer system startup method

The invention relates to a computer system and a computer system startup method, and in particular to a computer system and a computer system startup method suitable for a preboot execution environment (PXE).

With the continuous increase of network transmission speed, today's applications for the Internet are no longer limited to browsing web pages or transmitting data. For example, computers can be used for computer systems (such as desktop computers and notes). The operating system (also known as the operating system) of a computer or network computer is installed, or the network is used to retrieve the data required for the operation of the computer system from the remote server.

In general, the technology that uses a network to connect to a remote server uses a preboot execution environment (PXE) technology. In addition to the remote server's data to support the computer system for booting, the pre-boot execution environment technology can also use the remote server to perform the operating system or application on the computer system. installation. In practice, in order to achieve the above remote operation function, the pre-boot execution environment is burned to a network card (also known as a network interface card, network interface control). In the flash memory (flash memory).

Before the computer system wants to install the operating system through the network card with the pre-boot execution environment, the user must first set the network card with the pre-boot execution environment as the first startup item in the boot menu 20 (Boot Option #1). , for example, shown in Figure 1A. Fig. 1A is a schematic diagram showing the setting of a startup menu of a conventional host device before installing an operating system. In Figure 1A, the boot menu 20 is located in the interface of the basic input output system (BIOS), and the model of the network card with the pre-boot execution environment is [IBA XE Slot 0400 v2196]. In addition, block 30 is an annotation for the user to understand the function of the button.

Then, after installing the operating system through the network card with the pre-boot execution environment, the user must also set the hard disk drive (HDD) where the operating system is located as the first startup item in the startup menu 20 (for example, In Fig. 1B), the computer system can be smoothly entered into the operating system, otherwise the computer system will continue to install the operating system program. FIG. 1B is a schematic diagram showing the setting of a startup menu of a conventional host device after the installation of the operating system.

However, in the conventional computer system, in the method of installing the operating system, in addition to the need to modify the priority of the startup items in the startup menu 20 multiple times, when the network card with the pre-boot execution environment fails to start, it will be started. The other hardware device after the first startup item in the startup menu 20, for example, the [HDD] or the third startup item (Boot Option) indicated by the second startup item (Boot Option #2) in the startup menu 20 of FIG. #3) The indicated [USB]. In addition, when the number of remote servers is large, when the computer system passes the network card with the pre-boot execution environment When installing the operating system, because the network card with the pre-launch execution environment randomly installs the operating system through a remote server, it will not be able to accurately know the information of all the hardware devices in the computer system.

In view of the above problems, the present disclosure provides a computer system and a computer system startup method, so that the computer system can only boot to a hardware device having a pre-launch execution environment when the operating system is installed, and can identify in a pre-launch execution environment. Go to other hardware devices.

According to a computer system booting method according to an embodiment of the present disclosure, the computer system booting method is applicable to a computer system, wherein the computer system includes a plurality of hardware devices, and each hardware device provides a BIOS boot specification directory. The flow of steps of the computer system startup method is as follows. When the computer system performs the power-on detection of the basic input/output system, the sequence of the interrupt vectors of the corresponding interrupts is established according to the order of the BIOS boot specification directories of the plurality of hardware devices, and when the hardware devices are initialized, the computer The first address space of the BIOS boot specification directory of the hardware device for storing the values in the memory of the system will reserve a plurality of blank spaces, wherein the blank spaces are continuous or non-contiguous spaces. If the plurality of first hardware devices are initialized, the BIOS boot specification directories of the first hardware devices are inserted into the plurality of blank spaces in a specific order, if not the plurality of One of the hardware devices, the BIOS boot specification directories of the hardware devices are sequentially inserted into the space outside the plurality of blank spaces in the first address space, so that the first hardware devices are The BIOS The startup specification catalog is arranged in a relatively continuous, specific order. Then, the basic input/output system disables the boot device other than the second hardware device of the hardware devices to enable the boot option in the setup interface of the basic input/output system. Only the second hardware device is retained, and the computer system can only be activated from the second hardware device. Then, the computer system starts the pre-boot execution environment (PXE) from the second hardware device, selects the remote operating system to be installed on one of the first hardware devices of the computer system, and restarts the computer system after the installation is completed. Finally, when the computer system restarts the PXE from the second hardware device, in the PXE environment, the operating system is selected to be started from a certain first hardware device of the installed operating system.

In accordance with an embodiment of the present disclosure, a computer system includes a plurality of hardware devices, a memory, and a basic input and output system chip. The plurality of hardware devices are disposed in the computer system and include at least a first hardware device and a second hardware device, each of the hardware devices providing a BIOS boot specification directory. The first address space of the BIOS boot specification directory for storing the plurality of hardware devices in the memory is reserved with a plurality of blank spaces. The basic input and output system chip is used to execute the basic input and output system. Wherein, when the computer system is powered on and the power-on detection of the basic input/output system is performed, the order of the interrupt vectors of the corresponding interrupts is established according to the order of the BIOS boot specification directories of the hardware devices. When these hardware devices are initialized, the first address space in the memory will reserve a plurality of blank spaces, which are continuous or non-contiguous spaces. If the initialized hardware device is the first hardware device, the BIOS of the first hardware device is activated. The recordings are inserted into the plurality of blank spaces in a specific order such that the basic input/output system acquires the interrupt vectors of the hardware devices generated at this time to sort the items; if not the first hardware devices, the hardware devices are The BIOS boot specification directory is sequentially inserted into the space outside the blank spaces in the first address space, so that the BIOS boot specification directories of the first hardware device are arranged in a relatively continuous and specific order. Then, the basic input/output system disables the startup item of the hardware device other than the second hardware device of the hardware devices, so that only the first option is selected in the startup option in the setting interface of the basic input/output system. In the case of a second hardware device, the computer system can only be activated from the second hardware device. Then, the computer system starts the PXE from the second hardware device, selects the remote operating system to be installed on one of the first hardware devices of the computer system, and restarts the computer system after the installation is completed. Finally, when the computer system restarts the PXE from the second hardware device, in the PXE environment, the operating system is selected from a first hardware device of the installed operating system to achieve the need to restart multiple times and modify the startup sequence. And when the second hardware device fails to boot, it does not lead to other hardware devices to successfully complete the startup of the operating system.

In summary, the present disclosure provides a computer system and a computer system startup method by reserving a plurality of blank spaces in a first address space and initializing to a first identified hardware device. Inserting the content of the boot specification directory corresponding to the hardware device into the first blank space, so that the entry bit address of the interrupt instruction of the hardware device is first called, thereby making the hardware device in advance The first one in the boot execution environment will be recognized. In addition, due to The hardware device other than the hardware device with the pre-launch execution environment is disabled in the startup menu, and only the hardware device with the pre-launch execution environment is retained, so that the host device only starts when the operating system is installed. The hardware device has a pre-launch execution environment, and other hardware devices can be identified in the pre-launch execution environment and the hardware devices are activated in the arranged order.

The above description of the disclosure and the following description of the embodiments of the present invention are intended to illustrate and explain the spirit and principles of the invention, and to provide further explanation of the scope of the invention.

1‧‧‧Computer system

10‧‧‧First hardware device

12‧‧‧Second hardware device

14‧‧‧ memory

140‧‧‧First address space

1400‧‧‧ blank space

1402‧‧‧Address space outside the blank space in the first address space

16‧‧‧Basic Input and Output System Wafer

20‧‧‧Start menu

30‧‧‧Notes

S600~S608‧‧‧Step process

Fig. 1A is a schematic diagram showing the setting of a startup menu of a conventional host device before installing an operating system.

FIG. 1B is a schematic diagram showing the setting of a startup menu of a conventional host device after the installation of the operating system.

2 is a functional block diagram of a computer system in accordance with an embodiment of the present disclosure.

Figure 3 is a schematic illustration of a first location space in accordance with an embodiment of the present disclosure.

FIG. 4 is a schematic diagram showing the setting of a startup menu of a host device according to an embodiment of the present disclosure.

FIG. 5 is a schematic diagram of an interface of a host device in a disk operating system according to an embodiment of the present disclosure.

Figure 6 is a flow chart showing the steps of a computer system booting method in accordance with an embodiment of the present disclosure.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

[One embodiment of computer system]

Please refer to FIG. 2, which is a functional block diagram of a computer system according to an embodiment of the present disclosure. As shown in FIG. 2, the computer system 1 can be, for example, a desktop computer, a notebook computer, an all-in-one PC (AIO PC), or a network computer, but is not limited thereto. The computer system 1 mainly includes a first hardware device 10, a second hardware device 12, a memory 14 and a basic input/output system chip 16, wherein the basic input/output system chip 16 is electrically connected to the first hardware device 10 and the second hard device. Body device 12 and memory 14. The functional modules of each part of the computer system 1 will be described in detail below.

The first hardware device 10 and the second hardware device 12 are both disposed in the computer system 1, and each of the hardware devices provides a BIOS boot specification table (BBS_table). The ordering of this BIOS boot specification directory can be used to indicate the boot order of the hardware device. Sort.

In practice, the first hardware device 10 can be a SATA hard disk, a SAS hard disk, and a SATA hard disk, a SAS hard disk, and a PCIE hard disk that are directly connected to the motherboard through an external storage expansion card. It can also be a universal serial bus (USB), and the second hardware device 12 can be a network card with a preboot execution environment (PXE, or network). , also known as a network interface card, network interface controller), in other words, the second hardware device 12 is a network card that can be powered on. It should be noted that the pre-loading execution environment is an extension of the remote program load (RPL) technology in the network technology. The pre-loading execution environment is suitable for the host device itself without a boot system or When there is no hard disk at all, the remote server can be booted to use the remote system, and the pre-loading execution environment can also be used to execute the operating system or application installation through the remote server.

In addition, the present invention does not limit the number of hardware devices in the host device. In other words, the host device may have other hardware in addition to the first hardware device 10 and the second hardware device 12. Devices, and these hardware devices can be hard disk, floppy disk (FD), optical disk drive (also known as optical disk drive), interface card and network card interface card (adapter) and universal serial bus (universal serial bus, USB) and IEEE 1394 (also known as FireWire).

The memory 14 is configured to store data of the host device, and the first place in the memory 14 of the BIOS 14 for storing the plurality of hardware devices A plurality of blank spaces 1400 are reserved in the address space 140, as shown in FIG. Figure 3 is a schematic illustration of a first location space in accordance with an embodiment of the present disclosure. In practice, the memory 14 can be a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), and an erasable Non-volatile memory such as electrically erasable programmable read-only memory (EEPROM), flash memory, or a dynamic random access memory Volatile memory such as dynamic random access memory (DRAM) or static random access memory (SRAM). In addition, the blank space 1400 may be a continuous space or a non-continuous space, and the present invention is not limited thereto.

The basic input and output system chip 16 is used to perform a basic input and output system. In actual operation, when the computer system 1 is powered on and performs a power-on detection (BIOS POST, also known as power-on detection) of the basic input/output system, the basic input/output system chip 16 is based on the hardware devices (including the first hardware). The sequence of the BIOS startup specification directory of the device 10 and the second hardware device 12) establishes the order of the interrupt vectors of the corresponding interrupts.

When the hardware devices are initialized, the first address space 140 in the memory 14 will reserve a plurality of blank spaces 1400. If the initialized hardware devices are the first hardware devices 10, then Inserting the BIOS boot specification directory of the first hardware device 10 into the blank space 1400 in a specific order, So that the basic input/output system acquires the interrupt vectors of the hardware devices generated at this time in an item sorting; if the initialized hardware devices are not the first hardware devices 10, the BIOS boot specification directories of the hardware devices are Inserting into the space outside the blank space 1400 in the first address space 140 (ie, the address space 1402), so that the first hardware device 10 is plural, the plurality of first hardware devices 10 The BIOS boot specification directory can be arranged in a relatively continuous, specific order.

In other words, the computer system 1 of the present invention reserves a plurality of blank address spaces (i.e., blank spaces 1400) before storing the address space 1402 of the BIOS boot specification directory of all the hardware devices, and all of them The BIOS boot specification directories of the hardware devices are all sorted in the first address space 142. When the computer system 1 is initialized to the first hardware device 10, the content corresponding to the boot specification directory of the first hardware device 10 is inserted into the blank space 1400 described above, so that the interruption of the first hardware device 10 is accordingly performed. The entry address (e.g., INT 13h) will be called first, thereby causing the first hardware device 10 to be first identified (crawled) in the pre-launch execution environment.

In more detail, the basic input/output system will call the interrupt according to the entry address of the interrupt in the BIOS startup specification directory, and copy the master boottrap record (MBR) of the first hardware device 10 to the memory. The second address space of 14 (not shown in the figure), so that the master bootstrap loader (MBL) inside the master boot record gets control and looks for the active partition. When the first-stage bootloader finds the active partition described above, the first-stage bootloader transfers control to the internal partition. The second stage boot program is to start the operating system of the computer system 1. In practice, the second address space described above is 0000h:7C00h in the address space of the memory 14.

Furthermore, the present invention does not limit the number of contents of the boot specification directory of the hardware device that can be stored in the blank space 1400. In other words, the blank space 1400 can store the contents of the boot specification directory of at least one hardware device. In addition, the above interrupt is INT 13, which is the basic input and output interrupt of the hard disk provided by the basic input and output system. Generally speaking, INT 13h is used to provide services such as hard disk reading and writing and formatting.

Then, the basic input/output system disables the boot device other than the second hardware device 12 of the hardware devices to enable the boot option in the setup interface of the basic input/output system. Only the second hardware device is retained, and the computer system 1 can only be activated from the second hardware device 12, as shown in FIG. FIG. 4 is a schematic diagram showing the setting of a startup menu of a host device according to an embodiment of the present disclosure. The startup menu 20 of the interface of the basic input/output system in FIG. 4 includes Boot Option Priorities and a first startup item (Boot Option #1) and a second startup item (Boot Option) indicating the startup sequence. #2) and the third startup item (Boot Option #3), wherein the second startup item and the third startup item are both set to disabled, and only the first startup item is reserved. In other words, the basic input/output system disables the hardware devices other than the second hardware device 12 by using the expandable firmware interface loading option provided on each hardware device (EFI_LOAD_OPTION). Attributes Set to 0 to implement, this setting is executed within the firmware code of the basic input and output system. In addition, [IBA XE Slot 0400 v2196] in the first activation item merely indicates the model of the network card (ie, the second hardware device 12) having the pre-launch execution environment, but is not used to limit the second hardware device 12. Model. In addition, block 30 is an interface for the basic input/output system for the user to understand the function of the button.

Then, the computer system 1 starts the pre-launch execution environment from the second hardware device 12, and selects the remote operating system to be installed on one of the first hardware devices 10 of the computer system 1. After the installation is completed, the computer system 1 performs the re-installation. start up. Finally, when the computer system 1 restarts the PXE from the second hardware device, the operating system is selected from the first hardware device 10 of the installed operating system in the PXE environment, if the operating system is not installed to the already ordered system. When the first first hardware device is good, the restart will start to the first first hardware device and then fail to search for other first hardware devices in order until it is found and installed. The first hardware device of the operating system is activated to achieve a sequence that does not require multiple restarts and to modify the startup items, and does not boot to other hardware devices to successfully complete the operating system when the second hardware device 12 fails to start. Startup. In other words, when the computer system 1 starts the pre-launch execution environment from the second hardware device 12, the remote operating system will be installed on the first first hardware device 10 of the computer system 1, after the installation is completed. When the computer system 1 restarts and the computer system 1 restarts the pre-launch execution environment from the second hardware device 12, the first hardware device 10 of the first installed first operating system is started in the pre-launch execution environment. system.

Thereby, the computer system 1 of the present invention can only boot to the network card having the pre-launch execution environment (ie, the second hardware device 12) when executing the installation of the operating system or the application, and can also start the execution environment in advance. All of the hardware devices (including the first hardware device 10) corresponding to the blank space 1400 are identified, such as shown in FIG. FIG. 5 is a schematic diagram of an interface of a host device in a disk operating system according to an embodiment of the present disclosure. In other words, the computer system 1 acquires information of all the first hardware devices 10 on the computer system 1 under a disk operating system (DOS) that preactivates the execution environment, and selects a first one based on the information. The hardware device 10 is used to install the operating system. Generally, the first first hardware device is selected to be installed to install the operating system, and is also started from the first first hardware device when starting. In addition, FIG. 5 is only used to indicate that the host device is on the disk. A schematic representation of a hardware device that can be captured in the interface of the operating system.

In addition, the optional hardware required for the second hardware device 12 to perform the pre-launch execution environment startup is included in the basic input/output system or the firmware of the second hardware device 12 (ie, the network card firmware). It is worth mentioning that the basic input/output system establishes a sequence of interrupt vectors in accordance with the BIOS boot specification directory of the hardware devices, and is a DXE that performs power-on detection of the basic input/output system in the computer system 1. (driver execution environment, also known as driver execution environment) stage; the basic input/output system disables the processing program of the hardware device other than the second hardware device 12, and executes the basic input/output system in the computer system 1. The BDS (boot device selection) stage of power-on detection. Due to the startup procedure of the operating system (package The power-on detection of the basic input/output system has been known to those of ordinary skill in the art and will not be described in detail.

[An example of a computer system startup method]

Please refer to FIG. 2 to FIG. 6 together. FIG. 6 is a flow chart showing the steps of the computer system startup method according to an embodiment of the present disclosure. As shown in FIG. 6, the computer system startup method is applicable to the computer system 1, and the computer system includes a plurality of hardware devices (including the first hardware device 10 and the second hardware device 12), each of which is provided by the hardware device. BIOS boot specification directory.

First, in step S600, the computer system 1 establishes the order of the interrupt vectors of the corresponding interrupts according to the order of the BIOS boot specification directories of the plurality of hardware devices. Among them, the above interrupt is INT 13, which is the basic input and output interrupt of the hard disk provided by the basic input/output system. In step S602, when the hardware devices are initialized, the first address space 140 of the BIOS boot specification directory for storing the hardware devices in the memory 14 of the computer system 1 will reserve a plurality of blank spaces 1400. (as shown in Figure 3). If the initialized hardware device is the first hardware device 10, the BIOS boot specification directory of the first hardware device 10 is inserted into the blank space 1400 in a specific order; if the initialized hardware device is not the first hardware In the case of the device 10, the BIOS boot specification directories of the hardware devices are sequentially inserted into the space outside the blank space 1400 in the first address space (ie, the address space 1402), so that the BIOS of the first hardware device 10 is made. The startup specification catalog can be arranged in a relatively continuous and specific order.

In step S604, the basic input output system will be in addition to the second hardware The other hardware devices other than the device 12 disable the startup item so that only the second hardware device 12 remains in the startup option in the setup interface of the basic input/output system, and the computer system 1 can only be fixed from The second hardware device 12 is activated, for example as shown in FIG. In step S606, the computer system 1 starts the pre-boot execution environment (PXE) from the second hardware device 12, and installs the remote operating system to the first hardware device 10 of the computer system 1, and the installation is completed. Then restart computer system 1. In addition, if the computer system 1 has a plurality of first hardware devices 10, the user can select one of the plurality of first hardware devices 10 to perform the installation of the remote operating system.

In step S608, when the computer system 1 restarts the PXE from the second hardware device 12, the first hardware device 10 from which the operating system is installed is selected to start the operating system in the PXE environment. It should be noted that if the computer system 1 has multiple hard disks and the operating system is not installed to the hard disk whose boot order is the first boot item, the tool in the PXE environment will fail when the hard disk of the first boot item is started. The operating system will not be turned on until the hard disk that installs the operating system is booted. In one embodiment, the basic input/output system calls the interrupt according to the entry address of the interrupt in the BIOS boot specification directory, and copies the master boot record of the first hardware device to the second address space of the memory 14 to Make the first stage bootloader inside the master boot record take control and find the active partition. When the first stage boot program finds the active partition, the first stage boot program transfers control to the second stage boot program inside the active partition to start the operating system of the computer system. The second address space is 0000h:7C00h in the address space of the memory 14.

In one embodiment, the computer system 1 acquires information of all the first hardware devices 10 on the computer system 1 under the disk operating system that starts the execution environment in advance, and selects a certain first hardware device 10 according to the above information. To install the operating system. In one embodiment, the basic input/output system disables the other hardware devices other than the second hardware device 12 (ie, step S604) by using the hardware provided in each of the hardware devices. The Attributes in the Extended Firmware Interface Load Option (EFI_LOAD_OPTION) is set to 0. This setting is fixed in the firmware code of the basic I/O system.

In one embodiment, the first hardware device 10 is a hard disk and the second hardware device 12 is a network card having a pre-launch execution environment. In one embodiment, the second hardware device 12 is required to perform the pre-launch execution environment startup. The read-only memory is included in the basic input/output system or in the network card firmware. In one embodiment, when the computer system 1 starts the pre-launch execution environment from the second hardware device 12, the remote operating system will be installed on the first first hardware device 10 of the computer system 1 arranged. After the installation is completed, the computer system 1 is restarted, and when the computer system 1 restarts the pre-launch execution environment from the second hardware device 12, the first first hardware device is arranged from the installed operating system in the pre-launch execution environment. 10 start the operating system.

Further, the step of the basic input/output system establishing the sequence of the interrupt vectors corresponding to the interrupts according to the BIOS boot specification directory of the hardware devices (ie, step S600) is a DXE phase in which the computer system 1 performs power-on detection of the basic input/output system. The basic input/output system will be other than the second hardware device 12 The step in which the hardware device is disabled (ie, step S604) is a BDS phase in which the computer system performs power-on detection of the basic input/output system.

[Possible effects of the examples]

In summary, the embodiments of the present invention provide a computer system and a computer system startup method, by preserving a plurality of blank spaces in a first address space, and initializing to the first identified hardware. When the device is installed, the content of the boot specification directory corresponding to the hardware device is inserted into the first blank space, so that the entry address of the interrupt instruction of the hardware device is first called, so that the hardware device is The first one in the pre-launch execution environment will be recognized. In addition, since the hardware device other than the hardware device having the pre-launch execution environment is disabled in the startup menu, only the hardware device having the pre-launch execution environment is retained, so that the host device is installed when the operating system is installed. Only the hardware devices with the pre-launch execution environment are booted, and other hardware devices can be identified in the pre-launch execution environment and the hardware devices can be booted in the arranged order. Thereby, the computer system and the computer system startup method of the present invention do not need to restart multiple times and modify the startup sequence of the startup items when installing the operating system, and do not boot to other hardware in the case that the pre-launch execution environment fails to start. The device, however, will repeatedly start the hardware device with the pre-launch execution environment, and the information of all the hardware devices on the host device can be more conveniently obtained, which is very practical.

Although the present invention has been disclosed above in the above embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Regarding the protection scope defined by the present invention Please refer to the attached patent application scope.

S600~S608‧‧‧Step process

Claims (10)

A computer system startup method is applicable to a computer system, the computer system includes a plurality of hardware devices, each of the hardware devices provides a BIOS boot specification directory (BBS_table), and the computer system startup method includes: the computer system is executed When a basic PSO is powered on (BIOS POST), the sequence of the corresponding interrupt vector is established according to the order of the BIOS boot specification directories of the hardware devices, when the hardware devices are initialized. a first address space of the BIOS boot specification directory for storing the hardware devices in a memory of the computer system reserves a plurality of blank spaces, and the blank spaces are continuous or non-contiguous spaces. If the plurality of first hardware devices are initialized, the BIOS boot specification directories of the first hardware devices are inserted into the plurality of blank spaces in a specific order, if not a hardware device, the BIOS boot specification directory of the hardware devices is sequentially inserted into the blank spaces in the first address space. In the space, the BIOS boot specification directories of the first hardware devices are arranged in a relatively continuous specific order; the basic input output system will be other than a second hardware device of the hardware devices. The other hardware device performs a startup disablement to keep only the second hardware device in the boot option in the setup interface of the basic input/output system, and the computer system is fixed only from the second hardware Device startup The computer system starts a pre-boot execution environment (PXE) from the second hardware device, and selects a remote operating system to be installed on one of the first hardware devices of the computer system, and the computer system performs a reinstallation after the installation is completed. And when the computer system restarts the pre-launch execution environment from the second hardware device, selecting to start the operating system from the first hardware device of the installed operating system in a pre-launch execution environment. The computer system startup method of claim 1, further comprising the basic input/output system invoking the interrupt according to the entry address of the interrupt in the BIOS boot specification directory, and copying a master boot record of the first hardware device Going to a second address space of the memory, so that a first stage boot program inside the master boot record has control and finds an active partition. When the first stage boot program finds the active partition, the The first stage boot program transfers control to a second stage boot program inside the active partition to start the operating system of the computer system. The computer system booting method of claim 1, wherein the computer system starts a pre-boot execution environment (PXE) from the second hardware device, and the remote operating system is installed to the first row of the computer system. On the first hardware device, after the installation is completed, the computer system is restarted, and when the computer system restarts the pre-boot execution environment from the second hardware device, the row from the installed operating system is started in the pre-launch execution environment. The first first hardware device of the cloth first activates the operating system. The computer system startup method according to claim 1, wherein the computer system acquires information of all the first hardware devices on the computer system under a disk operating system that starts the execution environment in advance, and selects a certain one according to the information. The first hardware device mounts the operating system. The computer system startup method of claim 1, wherein the basic input/output system disables a hardware device other than a second hardware device of the hardware devices, The Attributes in the Extensible Firmware Interface Loading Option (EFI_LOAD_OPTION) provided by the hardware device is set to 0. This setting is fixed in the firmware code of the basic I/O system. The computer system booting method of claim 1, wherein the first hardware device is a hard disk and the second hardware device is a network card having a pre-launch execution environment. The computer system startup method of claim 1, wherein the second hardware device is required to perform a pre-launch execution environment startup, and the read-only memory is included in the basic input/output system. The computer system booting method of claim 1, wherein the interrupt is a hard disk basic input/output interrupt provided by the basic input/output system. The computer system booting method of claim 1, wherein the step of the basic input/output system establishing a corresponding interrupt vector of the interrupt according to the BIOS boot specification directory of the hardware devices is performed by the computer system DXE phase of power-on detection of the basic input and output system, the basic input and output system The step of disabling the other hardware devices other than the second hardware device in the hardware devices is a BDS phase in which the computer system performs power-on detection of the basic input/output system. A computer system comprising: a plurality of hardware devices disposed on the computer system, and comprising at least a first hardware device and a second hardware device, each of the hardware devices providing a BIOS boot a memory directory in which a first address space of the BIOS boot specification directory for storing the hardware devices is reserved with a plurality of blank spaces; and a basic input/output system; The basic input/output system establishes a sequence of interrupt vectors corresponding to an interrupt according to the order of the BIOS boot specification directories of the hardware devices when the computer system is powered on and performs a power-on detection (BIOS POST). When the hardware device is initialized, the first address space in the memory will reserve a plurality of blank spaces, and the blank spaces are continuous or non-contiguous spaces, and the initialized hardware devices are the first hard The device, the BIOS boot specification directory of the first hardware device is inserted into the plurality of blank spaces in a specific order, so that the basic input/output system acquires the time The interrupt vectors of the hardware devices are sorted by input. If not, the BIOS boot specification directory of the hardware devices is sequentially inserted into the blank spaces in the first address space. Outside the space to make the first hardware device The BIOS boot specification directory is arranged in a relatively continuous and specific order, and then the basic input/output system disables the boot device in addition to a second hardware device of the hardware devices to enable Only the second hardware device is retained in the boot option in the setup interface of the basic input/output system, and the computer system can only be booted from the second hardware device, and then the computer system is from the second The hardware device starts a pre-boot execution environment (PXE), selects a remote operating system to be installed on one of the first hardware devices of the computer system, and restarts the computer system after the installation is completed. Finally, the computer system Re-starting the pre-launch execution environment from the second hardware device, selecting to start the operating system from the first hardware device of the installed operating system in the pre-launch execution environment, so as to achieve no need to restart multiple times and modify the startup item sequence And the second hardware device fails to boot to other hardware devices to successfully complete the startup of the operating system when the second hardware device fails to start. .