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[How-to] Format Disk from MBR to GPT with DiskPart in Windows 10

More and more users prefer to use the GPT partition style in recent days, so the demand for format disk to GPT partition style is increased. In this article, we will tell you how to format to GPT with DiskPart and an easier tool - EaseUS Partition Master.

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Updated by Sherly on Nov 10, 2023
Written by Tracy King


With the size of the hard drive getting bigger and bigger, the MBR partition style can't satisfy users' needs anymore. Because it doesn't support a hard drive larger than 2 TB. As an alternative, GPT (GUID Partition Table) partition style becomes a mainstream choice in recent years. It supports unlimited hard drive storage space and can create a maximum of 128 primary partitions.

There are many MBR users who want to convert their partition style to GPT. And Windows' built-in feature - DiskPart can help users finish the task. Here in this article, we will tell you how to use DiskPart to format to GPT.

Notes and Preparation:

1. Back up your disk. Format to GPT partition style might erase your data.

2. With DiskPart, you can only convert basic MBR disks without any partitions or volumes to GPT disks. If there are some partitions or volumes, please back up the data, and then delete all partitions or volumes before conversion.

Method 1. Format Disk to GPT with DiskPart Alternative [Easier]

DiskPart helps you convert from MBR to GPT, but the operation is too complicated for many users. That's why we want to recommend users try an easier method, turning to third-party partition management tool - EaseUS Partition Master for help.

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No matter you need to convert from MBR to GPT or from GPT to MBR, this tool enables you to manage it in a simple way with its Disk Converter feature without formatting. Also, it won't cause any data loss issue on your disk.

Here you can download EaseUS Partition Master, and follow the guide to see how to format to GPT in an easier way.

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

The main purpose of EaseUS Partition Master is to make partition management simpler and easier. Here are some advanced utilities of EaseUS Partition Master that you may also like:

  • Resize Partitions. Adjust the partition size according to your needs.
  • Merge Partitions. Combine two small partitions into a large one.
  • Clone Partitions. You can clone the partitions as well as the operating system.

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Note: After you have converted your disk from MBR to GPT with EaseUS Partition Master, you still need to reboot your computer and change the boot mode to UEFI.

Method 2. How to Format to GPT with DiskPart

DiskPart is a Windows built-in utility that uses command lines to perform disk partitioning operations. You don't need to worry if you are a novice user, please follow our guide to entering the command lines one by one, you can successfully format to GPT on your own. Here are the detailed steps.

Step 1. Press the Windows + R keys at the same time. Enter cmd in the Run box and click OK.

Step 2. In the command prompt, type diskpart and press Enter.

Step 3. Type list disk and press Enter. It will show you all the available disks, and assign them with a number like 0, 1, 2... If you only have one disk, then it will be disk 0.

Step 4. Type select disk # (replace # with the number of your disk) and press Enter. DiskPart will tell you that the target disk is selected.

Step 5. Type clean and press Enter. This command line is to remove all the partitions and volumes on the selected disk. It will also erase all the data on it.

Step 6. Type convert gpt and press Enter. Wait until the Command Prompt informs you that DiskPart has converted the selected disk to GPT format successfully.

Convert MBR to GPT with DiskPart

Does this tutorial with pictures help you? If it does, share this step-by-step guide to help more users.


Bonus Tip:

Aside from formatting disk to GPT, Diskpart can also help you create, format, delete, clean and even erase hard drive partitions. For a step-by-step guide, you can refer to this tutorial for help.

related articles

What is Diskpart? How to Master and Use Diskpart on Windows

Following this guide, you'll further learn what exactly Diskpart does, what Diskpart commands you can apply to manage disk drives, and you can even follow some tips to fix Diskpart errors like a professional. 

Image of Diskpart

Bonus: Change Legacy to UEFI After Converting MBR to GPT

After you have converted your OS disk from MBR to GPT, you need to change the boot mode to UEFI in the BIOS. Here is how you can do it.

Step 1. Shut down your computer, and restart it. 

Step 2. Keep pressing the F2 key until the BIOS Setup Utility screen appears.

Step 3. Select Boot, under the Boot tab, use the up and down arrows to choose UEFI mode, and press Enter.

Step 4. To save the changes and exit the screen, press F10.

Change boot mode to UEFI

The Bottom Line

In conclusion, you can apply Windows built-in DiskPart to format your disk to GPT partition style. Or you can choose a simpler alternative - EaseUS Partition Master to help you finish the task.

Free Download 

Windows 11/10/8/7100% Secure

No matter which way do you choose, remember to change the boot mode to UEFI after converting.

FAQs About Formatting Disk to GPT Using DiskPart

Here in this part, we also collected some hot topics about using DiskPart to format disk to GPT and if you have same doubts here, follow and find answers below:

1. How to format GPT?

  • Open Disk Management and right-click on the GPT disk partition.
  • Select 'Format', tick 'Perform a quick format', and click 'OK'.

2. How to Change MBR to GPT using DiskPart?

  • Open DiskPart.
  • Type list disk and hit Enter.
  • Type select disk # and hit Enter. (Replace # with the disk number of MBR disk.)
  • Type clean and hit Enter.
  • Type convert gpt and hit Enter.

3. How to convert disk to GPT?

  • Launch EaseUS Partition Master and go to 'Disk Converter'.
  • Click 'Convert MBR to GPT' and click 'Next'.
  • Select target MBR disk, and click 'Convert'.

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About the Author

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.

Read full bio

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.

Read full bio

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