Tell fortune with gpt

Win 10 partition with MBR or GPT? Explain the difference between MBR and GPT in detail.

MBR and GPT are two common modes of win 10 system partition. Beginners are unfamiliar with MBR and GPT. I don't know who is better in these two modes. In fact, GPT means GUID partition table, which is a new standard gradually replacing MBR. It was formed by UEFI. GPT will be more and more dominant in the future development, and MBR will be gradually replaced by GPT. Want to know more friends and look down together.

Introduction of MBR and GPT in win 10 partition table;

Generally, it is partitioned by MBR, and the difference between MBR and GPT with no more than 1T hard disk space is only in details.

Only motherboards based on UEFI platform support GPT partition boot.

If there is only one SSD of 120G, just select MBR partition table.

MBR partition:

MBR means "master boot record" and has its own launcher, which is the startup code. Once the startup code is destroyed, the system cannot be started, and the system can only be started through repair. The maximum capacity is 2TB, 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:

GPT, which means GUID partition table, is a new standard that gradually replaces MBR. It is supplemented by UEFI, so that UEFI replaces the old BIOS and GPT replaces the old MBR. This standard is not limited by MBR. The capacity of a disk drive can be so large that neither the operating system nor the file system can support it. It also supports almost unlimited number of partitions, limited only by the operating system, and Windows supports at most 128 GPT partitions. With UEFI, all 64-bit win0, win8, win7 and Vista and the corresponding servers can be started from GPT.

MBR partition table

The traditional partition scheme (called MBR partition scheme) saves partition information in 64 bytes of the first sector (MBR sector) of the disk, and each partition item occupies 16 bytes, including active status flag, file system identification, start-stop cylinder number, number one, sector number, hidden sector number (4 bytes) and total sector number (4 bytes). Because MBR sector only has 64 bytes, This is also the reason why the number of hard disk main partitions cannot exceed 4. Later, in order to support more partitions, the concepts of extended partition and logical partition were introduced. But each partition entry is still stored in 16 bytes. The number of main partitions cannot exceed the limit of four, and in many cases four main partitions cannot meet the needs. In addition, the key point is that the MBR partition scheme cannot support disks with a capacity of more than 2TB. Because this scheme uses 4 bytes to store the total number of sectors in a partition, the maximum number of sectors that can represent the 32nd power of 2 can be calculated as 5 12 bytes per sector, and the maximum number of sectors per partition cannot exceed 2TB. After the disk capacity exceeds 2TB, the starting position of the partition cannot be expressed. In the era of rapid development of hard disk capacity, the limit of 2TB has already been broken. It can be seen that the MBR partition scheme can no longer meet the needs.

GPT partition table

A disk partition architecture used by Extensible Firmware Interface (EFI) in Itanium-based computers. Compared with the Master Boot Record (MBR) partition method, GPT has more advantages, because it allows up to 128 partitions per disk, supports a volume size of up to 18 GB, allows the primary disk partition table and the backup disk partition table to be used for redundancy, and supports a unique disk and partition ID(GUID). Compared with the Master Boot Record (MBR) disk partition style which supports a maximum volume of 2TB and a maximum of 4 main partitions per disk (or 3 main partitions, 1 extended partitions and unlimited logical drives), the GUID partition table (GPT) disk partition style supports a maximum volume of 18EB (EB,1EB =/kloc). 1Pb =1024tb18eb =19327352832gb) and each disk has at most 128 partitions. Unlike MBR partitioned disks, key platform operation data is located in partitions, not unpartitioned or hidden sectors. In addition, GPT partition disk has redundant primary partition table and backup partition table to improve the integrity of partition data structure.

To sum up, this paper introduces the difference between MBR and GPT in win 10 partition table. After reading the tutorial, I believe everyone can clearly understand the difference between MBR and GPT!