UEFI stands for "Unified Extensible Firmware Interface" and is a standard that describes in detail a type of interface. This interface is used by the operating system to automatically load an operating system from a pre-boot operating environment.
UEFI boot is a new motherboard boot item and is being regarded as the successor to BIOS, which has a history of more than 20 years. As the name suggests, fast startup can improve the startup speed of the operating system after booting. Due to the intervention of UEFI during the boot process, the way of booting into the system in Windows 8 will be different from the traditional boot process. After SSD subverted the problem of slow computer startup, UEFI+Win8 is likely to subvert our concept of boot speed again.
So what are the startup advantages of UEFI startup compared to traditional BIOS? I hope everyone can have a new understanding of UEFI startup after reading this. First, let's take a look at the running process of UEFI.
UEFI boot has three advantages over BIOS boot:
First: Stronger security
UEFI boot requires an independent partition, which isolates the system startup files from the operating system itself, which can better protect the system startup. Even if the system startup error requires reconfiguration, we only need to simply reconfigure the boot partition. Moreover, for win8 systems, it uses UEFI secure boot and creates a trust source between the certificate stored in the firmware and the platform firmware, which can ensure that signed and certified "known safe" code can be executed before the operating system is loaded. and a bootloader that prevents users from executing malicious code in the root path.
Second: Startup configuration is more flexible
EFI startup is similar to GRUB startup. EFIShell can be called during startup, where you can load the specified hardware driver and select the startup file. For example, if the default startup fails, load the startup file on the USB flash drive in EFIShell to continue booting the system.
Third: Support larger capacity
Due to MBR limitations, traditional BIOS boot cannot boot hard drives exceeding 2.1TB by default. As hard disk prices continue to fall, hard disks above 2.1TB will gradually become more popular, so UEFI boot will also be the mainstream boot method in the future.
