I am often asked what is the use of bios. In fact, the question about "What is the use of upgrading bios" has been researched, so what is the use of upgrading bios? This is very much in need of help from Xiaobian, let's let Xiaobian tell you what is the use of the computer system to brush bios, I hope to help everyone.
The most immediate benefit of Win7 Ultimate 64 upgrade BIOS is that you can get many new features without spending money, such as support for new frequencies and new types of CPUs. For example, some older motherboards support Tualatin core PenTIum III and Celeron by upgrading the BIOS. Some motherboards now support the latest Prescott core PenTIum 4E CPU by upgrading the BIOS; breaking the capacity limit, directly using large-capacity hard drives; obtaining new boot modes; enabling previously blocked features such as Intel's Hyper-Threading Technology, VIA's memory interleaving technology, etc.; identify other new hardware, etc.
Solve the bug in the BIOS in the old versionSince BIOS is also a program, there must be a BUG, ​​and now the development of hardware technology is changing with each passing day. As the market competition intensifies, the cycle of motherboard manufacturers launching products is getting shorter and shorter, and there must be some unsatisfactory places in BIOS writing. These bugs often lead to inexplicable failures, such as unreasonable restarts, frequent crashes, poor system performance, device conflicts, and hardware devices that are "lost" for no reason. After user feedback and the vendor's own discovery, responsible vendors will release a new version of the BIOS in time to fix these known bugs, thus solving those inexplicable failures.
Due to the danger of BIOS upgrades, various motherboard manufacturers have developed many BIOS features for their own products and users' actual needs. For example, the BIOS update has the famous Gigabyte's @BIOS Writer, which supports the GIGABYTE motherboard to automatically find the new BIOS and automatically download and refresh the BIOS, eliminating the need for the user to manually find the new BIOS, and avoiding the user accidentally brushing the BIOS of different models. Dangerous, and Gigabyte@BIOS also supports many non-Gigabyte motherboards to back up and flash the BIOS under Windows; other similar BIOS features include ASUS Live Update, Abit Flash Menu, QDI Update Easy, and MSI Live Update. 3, etc., MSI's Live Update 3 in addition to the motherboard BIOS, MSI's graphics card BIOS and optical storage device Firmware can also automatically refresh online, is a very powerful MSI product-specific tools. In addition, Intel's original motherboard's Express BIOS Update technology also supports flashing the BIOS under Windows, and this technology is an executable program that combines the BIOS file and the refresh program, which is very suitable for beginners. In the prevention of BIOS corruption and refresh failure, there are Gigabyte's dual BIOS technology, QDI's diamond lock technology, Intel original motherboard's Recovery BIOS technology and so on.
In addition to the manufacturer's new BIOS, we can also modify the BIOS to some extent to get some new features, such as changing the ENERGY STAR LOGO, changing the full-screen boot screen, and obtaining certain features of some brand motherboards (eg Adding the Jetway Recovery Wizard module to the non-Jiebo motherboard), add the graphics card BIOS module to rescue the BIOS damaged graphics card, open the chipset function blocked by the motherboard manufacturer, and even support the new CPU type, directly support the large capacity hard disk without DM Software like that. However, these need to be very familiar with the BIOS and have some hands-on ability and experience before you can do it.
For many newcomers, flashing the BIOS is still mysterious. And for some BIOS-related knowledge, many people are also ignorant. Here, we will have a comprehensive understanding of the BIOS.
1. What is the BIOS?The BIOS is an abbreviation of the English "Basic Input Output System". After the translation, the Chinese name is "Basic Input and Output System". Its full name should be ROM-BIOS, meaning a read-only memory basic input and output system. In fact, it is a set of programs that are solidified onto a ROM chip on the motherboard of the computer. It stores the most important basic input and output programs, system setup information, power-on self-test procedures, and system bootloader programs. Some people think that since the BIOS is a "program", it should belong to the software, it feels like Word or Excel. But many people don't think so, because it has some differences with general software, and its connection with hardware is quite close. To put it bluntly, the BIOS should be a "bridge" between the software program and the hardware device, responsible for solving the immediate requirements of the hardware. The superior performance of a motherboard depends largely on whether the management function of the BIOS program is reasonable and advanced. The BIOS chip on the motherboard may be the only chip labeled on the motherboard. Generally, it is a 32-pin dual in-line integrated circuit with the word "BIOS" printed on it. The BIOS before 586 is mostly a rewritable EPROM chip. The above label plays a role in protecting the contents of the BIOS (UV irradiation will cause the contents of the EPROM to be lost) and cannot be torn off. The ROM BIOS after 586 mostly uses EEPROM (Electrically Erasable Read-Only ROM). Through the jumper switch and the driver disk that the system is equipped with, the EEPROM can be rewritten to facilitate BIOS upgrade. Common BIOS chips are Award, AMI, Phoenix, MR, etc., and the manufacturer's mark can be seen on the chip.
2, the role of BoisThe main functions of the BIOS are as follows:
The first is the self-test and initialization procedure: after the computer is powered on, the system will have a process to check each internal device. This is a program commonly called POST (Power On Self Test). This is also a function of the BIOS program. The complete self-test includes tests for CPU, 640K basic memory, extended memory of 1M or more, ROM, motherboard, CMOS memory, serial port, display card, soft disk subsystem and keyboard. If a problem is found during the self-test, the system will give a prompt or a whistle warning. If there is no problem, after completing the self-test, the BIOS will search for the valid boot drive such as soft, hard drive, CDROM, network server, etc. according to the boot sequence in the system CMOS settings, read the operating system boot record, and then give the system control to the boot. Record, by booting the system to complete the startup, you can safely use your baby. Second is the hardware interrupt processing: when the computer is powered on, the BIOS will tell the CPU and other hardware devices the interrupt number. When you enter the command to use a certain hardware when you operate, it will use the corresponding hardware to complete the command according to the interrupt number. Work, and finally jump according to its interrupt number will be the original state. Then there is the program service request: from the BIOS definition, it can be known that it always interacts with the computer's input and output devices. It sends commands through the most specific data port, sends or receives data of various external devices, thus implementing software application pairs. Hardware operation.
3, Bois and CMOS
Many friends have confused the concept of BIOS and CMOS. Here I will talk about CMOS and its relationship with BIOS:
CMOS is the abbreviation of "Complementary Metal Oxide Semiconductor". The translated meaning is complementary metal oxide semiconductor memory, which refers to a large-scale application of raw materials for integrated circuit chip manufacturing. But the exact meaning of CMOS here refers to a battery-operated readable and writable RAM chip used in most computers. The meaning of the BIOS has been explained earlier. So, what is the relationship between CMOS and BIOS? CMOS is a memory chip, of course, it belongs to hardware. Its function is to have data saving function, but it can only play the role of storage, but can not set the data stored in it. It is necessary to set the parameters in CMOS. It is necessary to pass a special setup procedure. Nowadays, most manufacturers have implemented the CMOS parameter setting program in the BIOS chip. When the computer is turned on, press a special button to enter the setting program, and the system can be easily set. That is to say, the system setting program in the BIOS is a means to complete the CMOS parameter setting, and the CMOS RAM is a place for storing the set data, and they all have a great relationship with the system parameter setting of the computer. Because of this, is there? "CMOS settings" and "BIOS settings" two statements, in fact, the exact statement should be "set the CMOS parameters through the BIOS setup program." BIOS and CMOS are both related and different, "CMOS settings" and "BIOS settings" are just two ways to simplify the setup process. In this sense, they refer to one thing.
The CMOS memory chip can be powered by the motherboard's battery, and the stored data will not be lost even if the system is powered down. But what happens if you remove the battery? Good question! If the battery has no power, or if there is a sudden contact problem, or if you take it off, then CMOS will lose all data stored internally due to power outage. However, if this happens, it is not a big problem. You can change the battery or check the cause of the bad contact. In short, ensure that the CMOS has electricity. Then boot into the BIOS program, select "LOAD BIOS DEFAULTS" or "LOAD SETUP DEFAULTS" in the main menu and press Enter. Finally, confirm the input "Y" and press Enter. You may have heard other players talk about the idea of ​​discharging the CMOS if you forget the power-on password. In fact, all the information including the password is lost. You don't need to enter the password when you turn it on, and then re-write the data.
The meaning of upgrading BoisThere are usually several reasons for upgrading the BIOS:
(1) Provide support for new hardware or technical specifications.
Computer hardware technology is developing too fast. The motherboard does not correctly identify or provide support for some new hardware (such as K6-III Celeron II CPU) or new technologies (such as DMA100, DMA66, hard disk larger than 35GB, etc.). Upgrade the BIOS to get support for new hardware or new technologies.
(2) Resolve the bugs in the old BIOS.
(3) Solve the year 2000 problem. Many motherboards produced before 1997 have problems in 2000, and some new motherboards have solved the year 2000 problem, but they cannot be passed under the individual Y2K test software. These problems can be solved by upgrading the BIOS.
The above is the answer to the use of the system brush bios, how do you feel after reading? Now everyone should know what is the use of upgrading bios? In short, upgrading bios is only good for harm. If you need it, you can try it. Only then can we use the computer better.
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