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Method 1. EaseUS Partition Master Step 1. Download and launch EaseUS Partition Master on your Windows computer; Step 2. Right-click the MBR ...Full steps
Method 2. Installation CD or Media  Step 1: First, you should enter the boot menu in your BIOS mode. Depending on your manufacturer, you can use that...Full steps

Why Do You Want to Change MBR to GPT in BIOS on Windows 11 

In most situations, a regular user will have no reason to change MBR to GPT in BIOS, especially if they are using an older OS. However, this can be an essential improvement to Windows 11 performance.

Here we will give you some of the most common situations that require you to convert MBR to GPT in BIOS. If you ever encounter one of these issues, this guide contains tried and proven solutions.

  • Windows 11 OS disk was converted to GPT by mistake and isn't bootable now.

Due to Microsoft's updates in Windows 11, it now requires UEFI and Secure Boot to install.

Unfortunately, users need more skill to make sure their PC is booting correctly. The fundamental problem is when the OS disk is converted to GPT while remaining on MBR in BIOS.

Since changing the Disk partition type will likely require formatting it, you are better off just changing the BIOS settings, as this will allow your PC to BOOT.

  • UEFI boot mode and secure boot mode were disabled on Windows 11 as the OS disk is with MBR.

Windows 11 requires UEFI and secure boot mode to be installed and run, and an MBR type partition does not support those settings and protocols as it hails from an older era.

As a result, your Windows 11 partition will need to be changed to GPT to enable these settings. 

  • Windows 11 was disabled on dual boot OS, and Windows 10 is currently used.

Sometimes, people will want to dual boot Windows 10 and Windows 11. This is most commonly the case with programmers, but it can also be done to increase the optimization of some programs that haven't been updated for Windows 11.

Since Windows 10 doesn't require GPT as 11 does, people will decide to run their Disk on MBR more often than not.

This can cause issues when you decide to enable Windows 11, so changing the Disk to GPT in BIOS is necessary.

  • Users want to change the MBR disk to GPT on the computer without OS.

To install Windows 11, you will need a GPT partitioned disk. If you first install this operating system and partition the disk in the MBR system, this can be an issue.

To make Windows 11 usable on that disk, you must first change it to GPT in BIOS.

Related article: Windows 11 Upgrade | Convert MBR to GPT Without Deleting Partitions.

How Do I Change MBR to GPT in BIOS 

This is quite a complex thing to do for people who have no experience with it. As a result, and intend to help you avoid system-crashing mistakes, we have written this guide that provides you with some great solutions to fix this issue.

Follow the instructions patiently, and you will soon see the results.

The first way to convert MBR to GPT in Bios is by using a Disk Converter Software. This type of software does almost everything for you, meaning that it will be a lot easier for newer and less experienced users to follow, and leaves less room for error.

Alternatively, if you are a more experienced user or simply want to try something new, you can convert MBR to GPT during the installation process by using the Windows 11 installation CD or Media.

Still, I recommend method 1 as it is more straightforward, making it great for beginners.

Read the rest of the guides to find detailed instructions on both methods.

Method 1. Change MBR to GPT in BIOS with Disk Converter Software 

EaseUS Partition Master is one of the best, if not the best, disk converter software options currently on the market and one that is perfectly optimized for Windows 11 users.

This makes it the perfect choice for the task, as it makes changing MBR to GPT in bios a simple and easy task no matter your level of experience.

Free Download 

Windows 11/10/8/7100% Secure

Step 1. Download and launch EaseUS Partition Master on your computer.

Step 2. Go to Disk Converter, select "Convert MBR to GPT" and click "Next" to continue.

convert MBR to GPT - 1

Step 3. Select the target MBR disk that you tend to convert to GPT, and click "Convert" to start the conversion.

convert MBR to GPT - 2

Method 2. Convert MBR to GPT During Windows 11 Installation via Its Installation CD or Media 

Another great way to convert MBR to GPT in BIOS on a computer is during the Windows 11 installation process. 

This method, however, is more suited for advanced users who know what they are doing and are familiar with the Command Prompt. Novice users should stick to the first method as it is much easier.

Step 1: First, you should enter the boot menu in your BIOS mode. Depending on your manufacturer, you can use that by pressing F2/Del or some other shortcut. Once in BIOS, you will need to look for the boot menu, which will look something like this:

Step 2: Afterward, select the CD/DVD- ROM drive or USB your Windows 11 installation drive is on, and select it.

Step 3: Press Enter, then press any key to proceed, rebooting your pc. You will get the Windows 11 setup to run.

windows 11 product activation

Step 4: Once on the Windows 11 activation screen, you need to press Shift + F10 to run Command Prompt.

Step 5: In the Command prompt, type in the command diskpart, hit enter, and then the command list disk and once again hit Enter

You will have all disks listed. You should be able to recognize the disk that you want to convert (the one where you want your Windows installed). 

The next command you need to type in is select disk 0 - depending on the number of your disk.

Then, you want to clean the disk with the command clean. Type it in and hit enter. You should see the message that your disk is cleaned. 

The final command to convert to GPT is convert GPT. You should see the success message in the command prompt. 

convert mbr to gpt

And now, all you have to do is type in Exit, hit enter, and repeat it once more - exit, and hit enter.

Following these commands will get the disk converted to GPT, allowing for a successful Windows 11 installation.


Changing MBR to GPT in BIOS can be quite complicated, especially for inexperienced users. As a result, we have compiled a guide for you to follow and great software that can make this process much easier. 

If you need any additional help, check the EaseUS Partition Master website. You will find everything you know about hard drives, partitioning, and Windows 11 in the software. You can also use it to do a hard drive speed test.

Free Download 

Windows 11/10/8/7100% Secure

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Updated by Sherly

Sherly joined EaseUS in 2022 and she has always loved writing articles and enjoys the fun they bring. She receives professional training here, focusing on product performance and other relative knowledge. She has written over 200 articles to help people overcome computing issues.

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Written by Tracy King

Tracy became a member of the EaseUS content team in 2013. Being a technical writer for over 10 years, she is enthusiastic about sharing tips to assist readers in resolving complex issues in disk management, file transfer, PC & Mac performance optimization, etc., like an expert.

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