There are also the following that can be popularized

1: UEFI BIOS can be said to be the successor of legacy BIOS, which is the descendant of traditional BIOS. The mainstream model in the future.

2: The difference between MBR and GPT

1. Traditional MBR supports a maximum of 2TB single partition and can set up to 4 primary partitions

2.GPT Supports single partitions of more than 2TB, and can theoretically set up 128 primary partitions (the 4k alignment of the hard disk has nothing to do with GPT, and AHCI has nothing to do with GPT)

Three: Under what circumstances can the UEFI+GPT mode be used? How about installing the system?

First of all, we must understand that win7/8 64-bit system + UEFI can boot in GPT.

Four: Nowadays, there are still many people who use the traditional legacy+MBR mode to install the system!

Because the hard drive of a home notebook or desktop computer generally does not exceed 1TB, it is usually OK to create only one or two primary partitions.

Five: Partition table knowledge points

1. MBR partition table: Master Boot Record, which is the hard disk master boot record partition table. It only supports hard disks with a capacity of less than 2.1TB and more than 2.1TB. A TB hard drive can only manage 2.1TB and supports up to four primary partitions or three primary partitions and one extended partition. There can be multiple logical partitions under the extended partition.

2. GPT Partition Table: GPT, Globally Unique Identifier Partition Table (GUID Partition Table). Compared with the MBR limit of 4 partition table entries, GPT has no limit on the number of partitions, but Windows only has a maximum of 4 partition table entries. Supports 128 GPT partitions, and the GPT manageable hard disk size reaches 18EB. Only motherboards based on the UEFI platform support GPT partition boot.

3. ESP partition: EFI system partition, which is used for computer systems that use EFI BIOS to start the operating system. The partition stores boot management programs, drivers, system maintenance tools, etc. If the computer uses an EFI system, or the current disk is used to boot the operating system on an EFI platform, an ESP partition should be recommended.

4. MSR partition: Microsoft reserved partition, which is a partition on a GPT disk used to reserve space for backup. For example, these partition spaces are needed when converting the disk to a dynamic disk.

5. SECURE BOOT function: A new security feature has been added to Windows 8. Secure Boot is built into UEFI BIOS to fight against malware infected with MBR and BIOS. Windows 8 will use Secure by default. Boot, during the boot process, any module to be loaded must be signed (mandatory), and the UEFI firmware will be verified. If there is no signature or cannot be verified, it will not be loaded.

Advantages of UEFI

UEFI, the full name of "Unified Extensible Firmware Interface", is a standard that describes a type of interface in detail. This interface is used by the operating system to automatically load an operating system from a pre-boot operating environment. The following are the advantages of UEFI:

1. Error correction features: What is significantly different from BIOS is that UEFI uses modularity, C language style parameter stack transfer method, and dynamic linking to build the system. It is better than BIOS. It is easier to implement and has stronger fault tolerance and error correction characteristics, thus shortening the system development time. More importantly, it runs in 32-bit or 64-bit mode, breaking through the addressing capabilities of traditional 16-bit codes and reaching the maximum addressing of the processor. This overcomes the disadvantages of slow BIOS code running.

2. Compatibility: Unlike BIOS, the driver of the UEFI system is not composed of code that runs directly on the CPU, but is written with EFI Byte Code (EFI byte code) of. Java exists in the form of "Byte Code". It is this intermediate mechanism without one step that allows Java to run on a variety of platforms. UEFI also draws on a similar approach. EFI Byte Code is a set of virtual machine instructions for UEFI drivers, which must be interpreted and run in the UEFI driver operating environment, thus ensuring full backward compatibility.

3. Mouse operation: UEFI has built-in graphics driver function, which can provide a high-resolution color graphics environment. After entering, the user can click with the mouse to adjust the configuration, everything is just like operating application software under Windows system. Simple.

4. Powerful scalability: UEFI will use a modular design, which is logically divided into two parts: hardware control and OS (operating system) software management. Hardware control is available to all UEFI versions** *Yes, and OS software management is actually a programmable open interface. With this interface, motherboard manufacturers can implement a variety of rich functions. For example, various backup and diagnostic functions that we are familiar with can be implemented through UEFI, and motherboard or firmware manufacturers can use them as a major selling point of their products. UEFI also provides powerful networking functions. Other users can perform reliable remote fault diagnosis on your host without entering the operating system.

5. Graphical interface: Currently, UEFI mainly consists of these parts: UEFI initialization module, UEFI driver execution environment, UEFI driver, compatibility support module, UEFI high-level application and GUID disk partition.