MBR vs GPT: Which One Should You Use?


When it comes to hard drives, there are two main types of partitions: MBR and GPT. But which one should you use? Here’s a look at the differences between MBR and GPT, and when you should use each one.

What is MBR?

The Master Boot Record (MBR) is a special type of boot sector at the very beginning of a computer’s hard disk.

MBR was introduced in 1983 with the release of Microsoft’s MS-DOS operating system.

The purpose of the MBR is to help load the operating system into main memory or random access memory. MBR partition is one of the most important parts of a computer. It helps to load and run the operating system smoothly. Without MBR, a computer cannot start up properly.

The MBR partition table has four primary entries, and each entry is 16 bytes in size. These four entries are used to describe the four primary partitions on the hard disk. In addition, the MBR partition table contains one entry for an extended partition. The extended partition can be used to logical partitions.

The MBR can be found on the first sector of the hard disk. It occupies 512 bytes of space and contains important information about the partitions on the disk. The MBR also contains a bootloader, which is responsible for loading the operating system into memory. The bootloader is typically stored in the first few sectors of the hard disk, immediately after the MBR.

What is GPT?

GPT, or GUID Partition Table, is a standard for the layout of the partition table on a physical storage device used in a desktop, server, or portable computer. GPT is part of the EFI specification and was first introduced in early Intel motherboards. Today, GPT is supported by all major operating systems, including Windows, macOS, Linux, and BSD. GPT is more efficient than the older MBR (Master Boot Record) partitioning scheme and allows for larger partitions and more robust data protection. GPT uses a hashing algorithm to protect the integrity of the partition table and requires a BIOS that supports booting from GPT-formatted drives. When installing an operating system on a GPT drive, you will need to create a new partition table and select the “GPT” option. You can then create up to 128 partitions on the drive.

MBR vs GPT: Pros of MBR

  • The main advantage of MBR over other partitioning schemes is that it is compatible with a wide range of operating systems. This means that you can use MBR to create partitions that can be read by Windows, Linux, and macOS.
  • Another advantage of MBR is that it supports up to four primary partitions. This can be useful if you want to create separate partitions for different purposes such as storing your operating system files on one partition and your data files on another.
  • MBR allows for a simple and efficient design that is easy to understand and use.

MBR vs GPT: Cons of MBR

  • One of the main disadvantages of an MBR partition is that it can only support a maximum of four primary partitions, or three primary partitions and one extended partition. This can be limiting if you want to create multiple partitions on your hard drive.
  • Additionally, MBR partitions are not compatible with UEFI systems, which means that you won’t be able to boot from an MBR-partitioned hard drive on a newer computer.
  • And finally, MBR partitions can be more vulnerable to corruption and data loss due to the way they store information.

MBR vs GPT: Pros of GPT

  • GPT drives can be greater than 2TB in size and can have an unlimited number of partitions.
  • In addition, GPT drives are more resistant to corruption than traditional MBR drives. As a result, they are often preferable for use in mission-critical systems
  • GPT allows you to create much larger partitions than traditional MBR partitions. This can be particularly useful if you have a lot of data to store.

MBR vs GPT: Cons of GPT

  • One is that they are not compatible with all operating systems; for example, GPT drives cannot be read by older versions of Windows.
  • Another downside is that GPT drives can be more difficult to recover if they become corrupted.

When should you use MBR instead of GPT?

There are several reasons why you might want to use MBR partitioning instead of another type.

  • One reason is that MBR is compatible with a wide range of operating systems, including all versions of Windows and many versions of Linux.
  • Another reason is that MBR provides better support for older hardware. In particular, MBR can be used on computers with BIOSes, whereas other types of partitioning require the use of UEFI.
  • Finally, MBR is typically faster and simpler to set up than other types of partitioning.

As a result, it is often the best choice for users who are not experienced with computer customization.

How to convert between the two formats?

MBR to GPT Partition

To convert from MBR to GPT partition, you will need to use a disk partitioning tool. There are many different tools available, but we recommend using MiniTool Partition Wizard. This tool is designed for Windows and it is very easy to use.

  • Simply launch the program and select the disk that you want to convert.
  • Then, click on the Convert MBR to GPT option and follow the instructions on the screen.
  • Within a few minutes, your disk will be converted and you will be able to take advantage of the increased flexibility that GPT partitions offer.

GPT to MBR Partition

  • First, open Disk Management by pressing Windows+R, typing diskmgmt.msc into the Run dialog, and pressing Enter. You could also search for “Disk Management” in the Start menu.
  • Right-click on your system drive (typically C:) and select “Convert to MBR.”
  • You’ll see a warning telling you that converting to MBR will delete any partitions on the drive. If you’re sure you want to proceed, click “OK.”

Disk Management will now erase your partitions and convert the drive to MBR. When it’s finished, you can close Disk Management and restart your computer. Your system should now be using an MBR partition scheme. Keep in mind that while converting from GPT to MBR is generally safe, there’s always a risk of data loss when dealing with partitions. As such, be sure to back up your important files before proceeding just in case something goes wrong. Our advise is to best get a technician to do this for you.


GPT and MBR are two different types of partition schemes that can be used to organize data on a hard drive. GPT is more flexible than MBR, but it is not compatible with all operating systems. MBR is more widely compatible, but it has less flexibility than GPT.

When deciding which type of partitioning scheme to use, you should consider the operating system you are using and the amount of data you need to store.

I am a computer engineer holding a bachelor's degree in Computer Science, complemented by a Master's in Business Administration from University of Strathclyde, Scotland. I currently work as a Senior IT Consultant in Melbourne, Australia. With over 15 years of...