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UEFI guidance systemhttps://jingyan.baidu.com/article/a3aad71adb7bf9b1fb009631.html
System is more and more complex, the original BIOS chip capacity and function is not enough to use, just adopted UEFI guidance system!
CodePudding user response:
Simple uefi start is a new generation of the BIOS, more powerful, and it was based on the graphics mode, according to let the user more convenient intuitive operation,CodePudding user response:
So-called boot is before you start the operating system of the system, the boot is not like the operating system of hardware demand is high, and it is used to check before starting the, that is to say, if you press the power button, motherboard, then guide (or UEFI BIOS) is the first start, then checked bootstrap, and open system after there is no error, if there is problem will not enter the operating system to prevent your file is damaged, the following is UEFI, (if you don't want to see but it is good to have problems directly ask me) (point a praise)Can reduce the UEFI start can be regarded as a Bios upgrade, more powerful, more convenient to use, but with the start of the installation plate also need special treatment, under the small north to dear friends and share UEFI Bios setup, and dear friends need to pay attention to some problems in using oh,
UEFI guide a start is a kind of new motherboard, and is considered to be nearly 20 years of history of BIOS's successor, its advantage is that can improve the computer after boot, into the operating system startup,
UEFI compared with the traditional way of Bios setup, namely "skip" startup process of self-check oh, so the computer startup will fast, conventional startup mode of the so-called, is now referred to as Legacy, may have some dear friends into the Bios, in addition to UEFI on startup, another is the Legacy mode,
UEFI convenient (except to start them, and visible characteristics is one of the biggest UEFI support graphical operation, many dear friends may also be found, now a lot of the BIOS is a graphical interface, and support the mouse operation, it is not possible in the traditional BIOS, after the switch to UEFI mode, system boot also changed, especially want to realize the UEFI + GPT start dear friends, first to do this step,
In addition to the principle of different, UEFI compared to start the Bios setup and the following three advantages:
1, security
Start UEFI need a separate partition, it will isolate the system startup file and the operating system itself, can better protect system start, even if the system startup errors need to reconfigure, dear friends as long as easy to boot partition to configure, and for doing the above system, which USES UEFI security startup and firmware stored in the certificate and create a trust between the platform firmware source, to ensure that before loading the operating system, nearly can perform signed and certified "known security code and boot loader, can prevent the user to execute malicious code in the root directory,
2, start the flexible
EFI start and GRUB start, you can call at start-up time EFIShell, can the specified in the hard drive, select startup files, such as the default boot failure, on EFIShell loading U disk boot file
continue to reboot your system3, support capacity greater
Traditional BIOS setup due to the limitation of MBR, the default is unable to lead more than 2.1 TB hard drive, as the hard drive prices lower, more than 2.1 TB hard drive will gradually popular, so there are called UEFI start nowadays more and more mainstream way of starting,
About UEFI the difference between the start and the Bios (Legacy) start to dear friends is introduced here, in daily use, dear friends can also be in the two kinds of mode switching, small, also to introduce below,
At present, a lot of motherboard is set to launch three patterns, namely: Auto, UEFI, Legacy, in setting up starts, with UEFI BIOS provides startup options to choose from and in what way, various mode meanings as follows:
Auto (automatic)/Both: automatically according to the order of the boot device list starts, preferred UEFI way;
UEFI only (UEFI only) : select only for UEFI start-up equipment start;
Legacy only (Legacy) : select only have Legacy start condition of equipment start,
Some dear friends just don't like UEFI, or it is necessary to use the traditional Legacy BIOS setup mode, that is about to pay attention to the switch in with UEFI BIOS to Legacy, had better open a called CSM option, this option is compatible module, designed for compatible equipment, and can only work in Legacy mode does not support or not support UEFI operating system and set up (old graphics card, equipment),
(in the BIOS Settings Enable is open, the Disabled is closed, the meaning of)
Launch the basis of CSM this option in the BIOS Settings or start the Settings, the specific manufacturer of each set is different, need to look for the oh, dear friends to small suggested that try not to select automatic mode, because after determine their own way to start the installation system used in the U disk, hard disk boot even to form a complete set, so it is best to fixed their marriage, they need Legacy is the traditional pattern, UEFI is a brand new start mode, so you can complete the function of UEFI, or is to use Legacy to pursue the biggest compatibility,
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