CN101308470A - Computer system for actively restoring, backing up and updating BIOS - Google Patents

Abstract

The invention provides a computer system for actively restoring, backing up and updating BIOS, which comprises a mainboard, and a non-volatile memory chip and a chip set which are arranged on the mainboard, wherein the non-volatile memory chip stores a first BIOS and a second BIOS; the chipset has an external flag, the external flag has a first state and a second state corresponding to the first BIOS and the second BIOS respectively, when the external flag is in the first state, the motherboard is started by the first BIOS, when the external flag is in the second state, the motherboard is started by the second BIOS; when one BIOS is started according to the state of the external flag, if the BIOS is damaged, another complete BIOS is started, and the damaged BIOS is updated by the complete BIOS.

Description

Translated fromChinese

主动恢复、备份及更新BIOS的电脑系统Active recovery, backup and update of BIOS computer system

技术领域technical field

本发明关于一种电脑装置的BIOS技术领域，尤指一种主动恢复、备份及更新BIOS的电脑系统。The invention relates to the technical field of BIOS of a computer device, in particular to a computer system for actively recovering, backing up and updating the BIOS.

背景技术Background technique

基本输出输入系统(Basic Input Output System，BIOS)是载入在电脑硬件系统上的最基本的软件程序代码，其主要的功能包括开机自我测试(Power On SelfTest)，对内存、主机板芯片组、显示卡及外围装置做初始化动作，提供对显示器、键盘、处理器、内存等组件的基本设定，提供操作系统或应用过程调用的中断常驻程序，及载入操作系统等。因此BIOS可以被视为与硬件沟通的核心的微小操作系统，其通常是使用汇编语言写成的。如图1所示为一BIOS的内容，其包含程序区、数据区及启动区，程序区为BIOS映像档(BIOS image)，其包含BIOS程序代码，数据区包含NVRAM区及SMBIOS区，用以储存系统组态数据、序号及还原(restore)所需数据，启动区为一启动扇区(BootBlock)。Basic Input Output System (BIOS) is the most basic software program code loaded on the computer hardware system. Its main functions include power on self test (Power On Self Test), memory, motherboard chipset, The display card and peripheral devices perform initialization actions, provide basic settings for components such as monitors, keyboards, processors, and memory, provide interrupt resident programs called by the operating system or application procedures, and load the operating system, etc. Therefore BIOS can be regarded as the core tiny operating system that communicates with the hardware, which is usually written in assembly language. As shown in Figure 1, it is the content of a BIOS, which includes a program area, a data area and a boot area, the program area is a BIOS image file (BIOS image), which includes a BIOS program code, and the data area includes an NVRAM area and an SMBIOS area for use in Store system configuration data, serial number and data required for restore. The boot area is a boot sector (BootBlock).

而随着电脑的变动，亦有需要对BIOS进行更新，传统上更新BIOS映像档时，若更新失败时，仅能在启动扇区(Boot-Block)上开机，但启动扇区容量有限仅能支持电脑上特定装置初始化，而需再由软盘机或光驱于重新载入更新程序与BIOS映像档，重新烧录BIOS映像档至闪存中，如此将造成不必要的时间浪费。As the computer changes, it is also necessary to update the BIOS. Traditionally, when updating the BIOS image file, if the update fails, it can only be booted on the boot sector (Boot-Block), but the capacity of the boot sector is limited. It supports the initialization of specific devices on the computer, but it is necessary to reload the update program and BIOS image file from the floppy disk drive or CD-ROM, and re-burn the BIOS image file to the flash memory, which will cause unnecessary waste of time.

为了解决此种问题，因此已知提出一种以额外的非挥发性存储器及额外的判断电路来提供主要BIOS映像档与备份BIOS映像档等两个以上的BIOS映像档并存，其中主要BIOS映像档与备份BIOS映像档为同一版本，以当更新主要的BIOS映像档时，若更新成功，则更新版本必须在进入操作系统后才能复制至备份BIOS映像档，因而导致时间的浪费。而若更新失败时，则需以电路切换方式至备用的BIOS映像档来重新启动操作系统，如此将提高了主机板的成本，且增加的电路使得主机板空间增加。In order to solve this problem, it is known to propose an additional non-volatile memory and an additional judgment circuit to provide the coexistence of two or more BIOS image files such as the main BIOS image file and the backup BIOS image file, wherein the main BIOS image file It is the same version as the backup BIOS image file, so that when updating the main BIOS image file, if the update is successful, the updated version must be copied to the backup BIOS image file after entering the operating system, thus resulting in a waste of time. If the update fails, the operating system needs to be switched to a backup BIOS image file to restart the operating system, which will increase the cost of the main board, and the increased circuit will increase the space of the main board.

发明内容Contents of the invention

本发明的目的在提供一种主动恢复、备份及更新BIOS的电脑系统，以解决已知技术的缺点。The purpose of the present invention is to provide a computer system for actively recovering, backing up and updating BIOS, so as to solve the disadvantages of the known technology.

为达成上述的目的，本发明的主动恢复、备份及更新BIOS的电脑系统包括：一主机板、一非挥发性存储芯片、及一芯片组。非挥发性存储芯片设置于该主机板上，用以储存第一BIOS及第二BIOS，每一BIOS具有一BIOS映像档、一NVRAM区、一SMBIOS区及一开机扇区。芯片组设置于该主机板上，该芯片组具有一外部旗标，该外部旗标具有分别对应于该第一BIOS及第BIOS的第一状态及第二状态，该外部旗标于第一状态时，主机板由第一BIOS的BIOS映像档启动，该外部旗标于第二状态时，主机板由第BIOS的BIOS映像档启动；其中，在依该外部旗标的状态而启动其中一BIOS的BIOS映像档时，如该BIOS映像档毁损，则启动另一完整的BIOS映像档，且以该完整地BIOS映像档来更新毁损的BIOS映像档。In order to achieve the above-mentioned purpose, the computer system for actively recovering, backing up and updating BIOS of the present invention includes: a motherboard, a non-volatile memory chip, and a chipset. The non-volatile storage chip is arranged on the mainboard to store the first BIOS and the second BIOS. Each BIOS has a BIOS image file, an NVRAM area, an SMBIOS area and a boot sector. The chipset is arranged on the mainboard, the chipset has an external flag, and the external flag has a first state and a second state respectively corresponding to the first BIOS and the second BIOS, and the external flag is in the first state When the main board is started by the BIOS image file of the first BIOS, when the external flag is in the second state, the main board is started by the BIOS image file of the second BIOS; wherein, one of the BIOS is started according to the state of the external flag During the BIOS image file, if the BIOS image file is damaged, another complete BIOS image file is started, and the damaged BIOS image file is updated with the complete BIOS image file.

本发明提供BIOS恢复、备用及更新的功能，且当BIOS毁损时，还可自动将毁损的BIOS更新，使用者无需进入操作系统再亲自操作即可更新毁损的BIOS程序。The invention provides the functions of BIOS recovery, backup and update, and when the BIOS is damaged, the damaged BIOS can be automatically updated, and the user can update the damaged BIOS program without entering the operating system and operating it himself.

附图说明Description of drawings

为进一步数目本发明的具体技术内容，以下结合实施例及附图详细说明如后，其中：For further counting the specific technical content of the present invention, below in conjunction with embodiment and accompanying drawing, describe in detail as follows, wherein:

图1所示为已知BIOS的内容示意图。FIG. 1 is a schematic diagram of the content of a known BIOS.

图2所示为本发明一较佳实施例的主动恢复、备份及更新BIOS的电脑系统示意图。FIG. 2 is a schematic diagram of a computer system for actively restoring, backing up and updating BIOS in a preferred embodiment of the present invention.

图3所示为本发明一较佳实施例的复原BIOS的数据区的控制流程。FIG. 3 shows the control flow of restoring the data area of the BIOS in a preferred embodiment of the present invention.

图4所示为本发明一较佳实施例的更新BIOS的程序区的控制流程Fig. 4 shows the control flow of updating the program area of BIOS in a preferred embodiment of the present invention

图5所示为本发明一较佳实施例的开机自我测试以复原毁损BIOS的控制流程。FIG. 5 shows a control flow of POST to restore a damaged BIOS according to a preferred embodiment of the present invention.

图6所示为本发明一较佳实施例的备份BIOS的数据区的控制流程。FIG. 6 shows a control flow for backing up the data area of the BIOS in a preferred embodiment of the present invention.

具体实施方式Detailed ways

请参考图2所示本发明的主动恢复、备份及更新BIOS的电脑系统一较佳具体实施例的示意图。Please refer to FIG. 2 for a schematic diagram of a preferred embodiment of a computer system for actively recovering, backing up and updating BIOS of the present invention.

如图2所示，电脑系统包括主机板9、非挥发性存储芯片1、芯片组(Chipset)2、中央处理单元(CPU)3、及内存4，其中芯片组2及非挥发性存储芯片1均设于主机板9上，芯片组2的功能主要是作为电脑系统的中央处理单元3和其它周边、零组件沟通的桥梁，非挥发性存储芯片1则是用以储存电脑系统地BIOS，内存4则是储存数据及中央处理单元3所执行的各种程序，包括BIOS恢复、备份及更新程序等。As shown in Figure 2, the computer system includes amotherboard 9, a non-volatile storage chip 1, a chipset (Chipset) 2, a central processing unit (CPU) 3, and a memory 4, wherein the chipset 2 and the non-volatile storage chip 1 Both are arranged on themotherboard 9, the function of the chipset 2 is mainly as a bridge for communication between thecentral processing unit 3 of the computer system and other peripherals and components, and the non-volatile memory chip 1 is used to store the BIOS and memory of the computer system. 4 is stored data and various programs executed by thecentral processing unit 3, including BIOS recovery, backup and update programs, etc.

本实施例中非挥发性存储芯片1为一闪存芯片，当然亦可为电子可擦除式只读存储器(EEPROM)。闪存芯片可储存一第一BIOS11及一第BIOS12，其中第一BIOS11为一般开机使用，而第BIOS12则作为备用BIOS，每一BIOS11、12包含相同的程序区、数据区及启动区，其中程序区为BIOS映像档，数据区包含NVRAM区及SMBIOS区，启动区为一开机扇区(BootBlock)，开机扇区内包括一检查BIOS程序，可用以判断其BIOS映像档是否毁损。In this embodiment, the non-volatile memory chip 1 is a flash memory chip, of course, it can also be an electronically erasable read-only memory (EEPROM). The flash memory chip can store afirst BIOS 11 and afirst BIOS 12, wherein thefirst BIOS 11 is used for general booting, and thefirst BIOS 12 is used as a backup BIOS. EachBIOS 11, 12 includes the same program area, data area and startup area, wherein the program area It is a BIOS image file, the data area includes NVRAM area and SMBIOS area, and the boot area is a boot sector (BootBlock), which includes a check BIOS program, which can be used to determine whether the BIOS image file is damaged.

如熟悉电脑技术的人士所知，前述芯片组2中包括有超级输出(SuperIO)、数字信号处理器(DSP)、及由电池供电的存储器22(例如CMOS存储器)，本发明在该由电池供电的内存22中提供一外部旗标2As known to those familiar with computer technology, the aforementioned chipset 2 includes a super output (SuperIO), a digital signal processor (DSP), and a memory 22 (such as a CMOS memory) powered by a battery. An external flag 2 is provided in theinternal memory 22

1，此外部旗标21具有分别对应于第一BIOS11的第一状态(例如：0)及第BIOS12的第二状态(例如：1)，其中，外部旗标21预设为第一状态，而外部旗标21于第一状态或第二状态可由-BIOS设定程序(BIOS setup)所选择，亦可由一外部开关23所选择，当外部旗标21于第一状态时，主机板9由第一BIOS11的BIOS映像档所启动，当外部旗标21于第二状态时，主机板9由第BIOS12的BIOS映像档所启动。此外，本发明还在该由电池供电的存储器22中提供一第一BIOS映像档失效旗标24及一第二BIOS映像档失效旗标25，以分别指示该第一BIOS11的BIOS映像档及第BIOS12的BIOS映像档是否毁损，该第一BIOS映像档失效旗标24及第BIOS映像档失效旗标25亦可设定于BIOS的NVRAM区中。1. The external flag 21 has a first state (for example: 0) corresponding to thefirst BIOS 11 and a second state (for example: 1) for thefirst BIOS 12, wherein the external flag 21 is preset as the first state, and The external flag 21 can be selected by the BIOS setting program (BIOS setup) in the first state or the second state, and can also be selected by anexternal switch 23. When the external flag 21 is in the first state, themotherboard 9 is selected by the first state. A BIOS image file of the BIOS11 is activated. When the external flag 21 is in the second state, themotherboard 9 is activated by the BIOS image file of the BIOS12. In addition, the present invention also provides a first BIOS image file invalidation flag 24 and a second BIOS image file invalidation flag 25 in the battery-poweredmemory 22 to indicate the BIOS image file and the second BIOS image file of thefirst BIOS 11 respectively. Whether the BIOS image file of theBIOS 12 is damaged, the first BIOS image file invalidation flag 24 and the second BIOS image file invalidation flag 25 can also be set in the NVRAM area of the BIOS.

以上述本发明的主动恢复、备份及更新BIOS的电脑系统，可用以复原毁损的BIOS的数据区，例如，当更新第一BIOS11中途时因电力失效而造成数据区毁损，如图3所示为复原BIOS的数据区的控制流程，其比较第一BIOS11的数据区与第BIOS12的数据区(步骤S301)，如两者相同则表示数据区未毁损而无须复原，如两者不同则表示第一BIOS11的数据区已毁损，故将第BIOS12的数据区覆写至第一BIOS11的数据区(步骤S302)，而复原第一BIOS11的数据区。With the above-mentioned computer system of actively recovering, backing up and updating BIOS of the present invention, it can be used to restore the data area of the damaged BIOS. For example, when updating thefirst BIOS 11 midway, the data area is damaged due to power failure, as shown in FIG. 3 Restore the control flow of the data area of BIOS, it compares the data area of the first BIOS11 and the data area of the first BIOS12 (step S301), if both are the same, it means that the data area is not damaged and does not need to be restored, if the two are different, it means the first The data area of theBIOS 11 has been damaged, so the data area of thefirst BIOS 11 is overwritten to the data area of the first BIOS 11 (step S302 ), and the data area of thefirst BIOS 11 is restored.

以上述本发明的主动恢复、备份及更新BIOS的电脑系统，可用以更新BIOS的程序区，例如，当有新版BIOS而欲将原BIOS更新，如图4所示为更新BIOS的程序区的控制流程，其首先判断外部旗标21的状态(步骤S401)，当外部旗标21为第一状态时，将新版BIOS映像档覆写至第一BIOS11的BIOS映像档(步骤S402)，其中，新版BIOS映像档可由外部软盘机、光驱、或USB装置等特定装置来予以载入，接着判断是否要清除第一BIOS11的数据区，如是则清除第一BIOS11的NVRAM区及SMBIOS区(步骤S403)。而当外部旗标21为第二状态时，将新版BIOS映像档覆写至第BIOS11的BIOS映像档(步骤S404)，接着判断是否要清除第BIOS12的数据区，如是则清除第BIOS12的NVRAM区及SMBIOS区(步骤S405)，以完成BIOS的更新。With the above-mentioned computer system of the present invention actively recovering, backing up and updating the BIOS, it can be used to update the program area of the BIOS. For example, when there is a new version of the BIOS and the original BIOS is intended to be updated, as shown in FIG. 4 is the control of the program area of updating the BIOS Flow process, it first judges the state of external flag 21 (step S401), when external flag 21 is the first state, new version BIOS image file is overwritten to the BIOS image file of first BIOS11 (step S402), wherein, new version The BIOS image file can be loaded by specific devices such as an external floppy disk drive, an optical drive, or a USB device, and then judge whether to clear the data area of thefirst BIOS 11, and if so, clear the NVRAM area and the SMBIOS area of the first BIOS 11 (step S403). And when the external flag 21 is the second state, the new version of the BIOS image file is overwritten to the BIOS image file of the BIOS11 (step S404), and then it is judged whether to clear the data area of the BIOS12, if so, the NVRAM area of the BIOS12 is cleared And the SMBIOS area (step S405), to complete the update of the BIOS.

以上述本发明的主动恢复、备份及更新BIOS的电脑系统，可在开机(Poweron)时主动复原毁损的BIOS，如图5所示为开机自我测试以复原毁损BIOS的控制流程，其首先判断外部旗标21的状态(步骤S501)，当外部旗标21为第一状态时，表示欲由第一BIOS11启动，第一BIOS11的开机扇区检查其BIOS映像档是否完整(步骤S502)，如是，则由第一BIOS11的BIOS映像档进行开机自我测试(POST)(步骤S503)，如否，则将第一BIOS映像档失效旗标24予以设定(步骤S504)，再由第二BIOS12的BIOS映像档进行开机自我测试(POST)(步骤S506)。而若当外部旗标21为第二状态时，表示欲由第二BIOS12启动，第二BIOS12的开机扇区检查其BIOS映像档是否完整(步骤S505)，如是，则由第二BIOS12的BIOS映像档进行开机自我测试(POST)(步骤S506)，如否，则将第二BIOS映像档失效旗标25予以设定(步骤S507)，再由第一BIOS11的BIOS映像档进行开机自我测试(POST)(步骤S503)。With the above-mentioned computer system of actively recovering, backing up and updating the BIOS of the present invention, the damaged BIOS can be actively restored when the power is turned on (Poweron). As shown in FIG. The state of the flag 21 (step S501), when the external flag 21 is the first state, it means that it is intended to be started by thefirst BIOS 11, and the boot sector of thefirst BIOS 11 checks whether its BIOS image file is complete (step S502), if so, Then carry out power-on self-test (POST) (step S503) by the BIOS image file of the first BIOS11, if not, then the first BIOS image file failure flag 24 is set (step S504), then by the BIOS of the second BIOS12 The image file performs a power-on self-test (POST) (step S506). And if when the external flag 21 is the second state, it means that it will be started by the second BIOS12, whether the boot sector of the second BIOS12 checks whether its BIOS image file is complete (step S505), if so, then by the BIOS image of the second BIOS12 file to carry out power-on self-test (POST) (step S506), if not, then the second BIOS image file failure flag 25 is set (step S507), then the BIOS image file of the first BIOS11 carries out power-on self-test (POST) ) (step S503).

于开机自我测试后，检查第一BIOS映像档失效旗标24或第二BIOS映像档失效旗标25是否被设定(步骤S508)，若是，表示有一BIOS映像档毁损，故将另一完整地BIOS映像档覆写至此毁损的BIOS映像档(步骤S509)。After POST, check whether the first BIOS image file invalidation flag 24 or the second BIOS image file invalidation flag 25 is set (step S508), if so, it means that one BIOS image file is damaged, so another complete The BIOS image file is overwritten to the damaged BIOS image file (step S509).

于步骤S510检查第一BIOS11的SMBIOS区及NVRAM区是否为默认值(步骤S51O)，若为默认值表示其设定值已因BIOS毁损而失去，故将第二BIOS12的SMBIOS区及NVRAM区覆写至第一BIOS11的SMBIOS区及NVRAM区(步骤S511)，以复原第一BIOS11的数据区。若第一BIOS11的SMBIOS区及NVRAM区不为默认值，则再检查第二BIOS12的SMBIOS区及NVRA M区是否为默认值(步骤S 512)，若为默认值表示其设定值已因BIOS毁损而失去，故将第一BIOS11的SMBIOS区及NVRAM区覆写至第二BIOS12的SMBIOS区及NVRAM区(步骤S513)，以备份第一BIOS11的数据区至第二BIOS12的数据区。Check whether the SMBIOS district and the NVRAM district of the first BIOS11 are default value (step S510) in step S510, if it is the default value, it represents that its set value has been lost because of BIOS damage, so the SMBIOS district and the NVRAM district of the second BIOS12 are overwritten Write to the SMBIOS area and the NVRAM area of the first BIOS 11 (step S511 ), to restore the data area of thefirst BIOS 11 . If the SMBIOS district of the first BIOS11 and the NVRAM district are not the default value, then check whether the SMBIOS district of the second BIOS12 and the NVRAM district are the default value (step S512), if it is the default value, it represents that its set value has been changed by the BIOS Damaged and lost, so the SMBIOS area and the NVRAM area of the first BIOS11 are overwritten to the SMBIOS area and the NVRAM area of the second BIOS12 (step S513), to back up the data area of the first BIOS11 to the data area of the second BIOS12.

以上述本发明的主动恢复、备份及更新BIOS的电脑系统，可用以备份BIOS的数据区，如图6所示为备份BIOS的数据区的控制流程，其于更新第一BIOS11的数据区(步骤S601)后，如欲将此新的数据区备份至第二BIOS12(步骤S602)，则将第一BIOS11的SMBIOS区及NVRAM区覆写至第BIOS11的SMBIOS区及NVRAM区(步骤S603)，以备份第一BIOS11的SMBIOS区及NVRAM区。With the above-mentioned computer system of actively recovering, backing up and updating the BIOS of the present invention, it can be used to back up the data area of the BIOS, as shown in FIG. After S601), if the new data area is to be backed up to the second BIOS12 (step S602), then the SMBIOS area and the NVRAM area of the first BIOS11 are overwritten to the SMBIOS area and the NVRAM area of the first BIOS11 (step S603), with Back up the SMBIOS area and the NVRAM area of the first BIOS11.

由上述的说明可知，本发明可提供BIOS恢复、备用及更新的功能，且当BIOS毁损时，还可自动将毁损的BIOS更新，使用者无需进入操作系统再亲自操作即可更新毁损的BIOS程序。As can be seen from the above description, the present invention can provide the functions of BIOS recovery, backup and update, and when the BIOS is damaged, it can also automatically update the damaged BIOS, and the user can update the damaged BIOS program without entering the operating system and operating it himself .

上述实施例仅为了方便说明而举例而已，本发明所主张的权利范围自应以权利要求书所述为准，而非仅限于上述实施例。The above-mentioned embodiments are only examples for convenience of description, and the scope of rights claimed by the present invention should be determined by the claims, rather than limited to the above-mentioned embodiments.

Claims (12)

1. the computer system initiatively recovering, back up and upgrade BIOS is characterized in that, comprising:

One motherboard;

One non-volatile memory chips is arranged on the above-mentioned motherboard, and in order to store one the one BIOS and one the 2nd BIOS, each BIOS has BIOS reflection shelves, a NVRAM district, a SMBIOS district and a start sector; And

One chipset, be arranged on the above-mentioned motherboard, the said chip group has an outside flag, the said external flag has first state and second state that corresponds respectively to an above-mentioned BIOS and above-mentioned the 2nd BIOS, the said external flag is when above-mentioned first state, above-mentioned motherboard is started by the BIOS of above-mentioned BIOS reflection shelves, and the said external flag is when above-mentioned second state, and above-mentioned motherboard is started by the BIOS reflection shelves of above-mentioned the 2nd BIOS;

Wherein, when starting the BIOS reflection shelves of a BIOS wherein according to the state of said external flag, damage, then start another complete BIOS reflection shelves, and upgrade the BIOS reflection shelves of damage with above-mentioned intactly BIOS reflection shelves as above-mentioned BIOS reflection shelves.

2. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, whether wherein above-mentioned BIOS reflection shelves are damaged is by its start sector inspection.

3. active according to claim 2 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, wherein after starting BIOS reflection shelves, whether the SMBIOS district and the NVRAM district that check an above-mentioned BIOS are default value, if default value then overrides the SMBIOS district of above-mentioned the 2nd BIOS and NVRAM district SMBIOS district and NVRAM district to an above-mentioned BIOS.

4. active according to claim 2 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, wherein after starting BIOS reflection shelves, whether the SMBIOS district and the NVRAM district that check above-mentioned the 2nd BIOS are default value, if default value then overrides the SMBIOS district of an above-mentioned BIOS and NVRAM district SMBIOS district and NVRAM district to above-mentioned the 2nd BIOS.

5. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, wherein when the NVRAM district of the NVRAM district of a more above-mentioned BIOS and SMBIOS district and above-mentioned the 2nd BIOS and SMBIOS district for not simultaneously, the NVRAM district of above-mentioned the 2nd BIOS and SMBIOS district are override NVRAM district and SMBIOS district to an above-mentioned BIOS.

6. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, wherein when carrying out the BIOS renewal, when being above-mentioned first state as above-mentioned outside flag, new edition BIOS reflection shelves are override BIOS reflection shelves to an above-mentioned BIOS and the NVRAM district and the SMBIOS district that optionally remove an above-mentioned BIOS; And when the said external flag is above-mentioned second state, new edition BIOS reflection shelves are override BIOS reflection shelves to above-mentioned the 2nd BIOS and the NVRAM district and the SMBIOS district that optionally remove above-mentioned the 2nd BIOS.

7. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, wherein when carrying out BIOS when backup, for the SMBIOS district of an above-mentioned BIOS and NVRAM district being override SMBIOS district and NVRAM district to above-mentioned the 2nd BIOS.

8. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, but wherein above-mentioned non-volatile memory chips is a flash chip or an electronics erasing type ROM (read-only memory).

9. whether active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that, comprises in the wherein above-mentioned start sector that one checks bios program, damage to judge its BIOS reflection shelves.

10. active according to claim 1 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that wherein include one in the said chip group by a battery powered storer, the said external flag is by being provided by above-mentioned battery powered storer.

11. active according to claim 10 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that wherein the said external flag is selected by a BIOS setting program in above-mentioned first state or above-mentioned second state.

12. active according to claim 10 recovers, backs up and upgrade the computer system of BIOS, it is characterized in that wherein the said external flag is selected by an external switch in above-mentioned first state or above-mentioned second state.

Images