What are the differences and connections between GPT and MBR?

1, gpt:GPT means GUID partition table, which is a new standard gradually replacing MBR.

2.mbr:MBR means "master boot record".

Second, the disadvantages are different.

1, gpt: At the same time, it also supports almost unlimited number of partitions, only limited by the operating system. Windows supports at most 128 GPT partitions.

2.mbr: once the startup code is destroyed, the system cannot be started, and the system can only be started through repair.

Third, the characteristics are different.

1, gpt: formed by UEFI, so UEFI replaces the old BIOS and GPT replaces the old MBR.

2.mbr: It supports 2TB capacity at most, which has a big bottleneck, so GPT will be more and more dominant in the future, and MBR will be gradually replaced by GPT.

GPT partition mode uses GUID partition table, which is a relatively new disk partition table structure standard derived from EFI standard. Compared with the commonly used Master Boot Record (MBR) partition scheme, GPT provides a more flexible disk partition mechanism.

GUID partition table (GPT for short) The disk using GUID partition table is called GPT disk, which is a relatively new disk partition table structure standard derived from EFI standard. Compared with the commonly used Master Boot Record (MBR) partition scheme, GPT provides a more flexible disk partition mechanism. It has the following advantages:

1, supporting large hard disks above 2TB.

2. There is almost no limit to the number of partitions per disk. Why do you say "almost"? Because Windows system only allows 128 partitions at most. But it's enough.

3. There is almost no limit to the partition size. Another "almost" Because it uses a 64-bit integer to represent the sector number. To exaggerate, the partition size represented by a 64-bit integer is already "astronomical", and you won't see such a large hard disk for several years, let alone partition.

4. The partition table has its own backup. Copies of the same partition table are kept at the beginning and end of the disk. After a copy is destroyed, it can be restored by another copy.

5. Each partition can have a name (different from the volume label).

Since GUID partition scheme has so many advantages, can it all be used in partition? That's not true. Not all Windows systems support this partition scheme.

Reference to the above content: GPT disk _ Baidu Encyclopedia