What is the difference between GPT and MBR in disk partitioning?

 

GPT (GUID Partition Table) and MBR (Master Boot Record) are two types of partition formats used to store information about how disk drives are divided into sections (partitions) used by the operating system. Both these formats have significant differences in capacity and compatibility.

MBR (Master Boot Record) is the oldest and most commonly used partition format. It is used by operating systems such as Windows XP and earlier, as well as some versions of Linux. MBR has a maximum capacity of 2 TB and can only handle a maximum of 4 primary partitions.

GPT (GUID Partition Table) is a newer and more advanced partition format. It is used by operating systems such as Windows Vista and newer, as well as some versions of Linux. GPT has a maximum capacity of 9.4 x 10^12 bytes and can handle a maximum of 128 partitions.

The drawback of MBR is the limited capacity, it can only handle a maximum of 4 primary partitions and it cannot be used on hard drives with a capacity of more than 2 TB. While the advantage of GPT is the larger capacity, it can handle a maximum of 128 partitions and can be used on hard drives with a capacity of more than 2 TB.

However, the main difference between these two formats is compatibility. MBR can only be used on BIOS (Basic Input/Output System) systems, while GPT can be used on both BIOS and UEFI (Unified Extensible Firmware Interface) systems. Therefore, if you will be installing a new operating system on a computer that uses UEFI, you should use GPT.

Overall, GPT has advantages over MBR because of its larger capacity and wider compatibility. But if you will be installing an operating system on a computer that only supports BIOS, you should use MBR.