MBR to GPT | How to Convert MBR to GPT in Windows 10 Easily and Safely

Brithny updated on Jun 04, 2020 to Partition Master | How-to Articles

This page includes three practical and reliable methods to assist you in converting MBR to GPT with ease. If you are trying to change your disk partition style, pick up any method listed here to which your disk from MBR to GPT without losing any data now:

  1. #1. EaseUS Partition Master - Safest & Easiest MBR to GPT Conversion Tool, No Data Loss
  2. #2. Disk Management - Free & Windows Built-in Tool, Requires Delete Partitions for Converting MBR to GPT
  3. #3. DiskPart - Free & Complex Windows Built-in Tool, Deleting Partition for MBR to GPT Conversion Is Required

Should I Use MBR or GPT

As Windows partition styles, both MBR (Master Boot Record) and GPT (GUID Partition Table) are widely used in storage devices like your computer hard drives. But nowadays, more and more users are changing their disks from MBR to GPT. Why?

MBR vs. GPT

Here is a comparison table of MBR vs. GPT, from which you will learn which partition style you should use for your disk:

Comparison MBR (Master Boot Record) GPT (GUID Partition Table)
Supported Partition Numbers Maximum 4 partitions. Maximum 128 partitions.
Supported Disk Capacity 2TB (for 512B sector), 16TB (for 4Kn sector) No disk capacity limit (2^64 logical blocks for 512B or 4Kn sector)
Supported Boot Mode BIOS UEFI
Supported OS
  • Windows10/8/7/XP/Vista
  • Windows Server 2019/2016/2012/2008
  • Windows 10/8/7, Linux
  • Windows Server 2019/2016/2012/2008
  • Windows XP/Vista (64bit for data only)
  • macOS and modern Mac OS X

 

Which Is Better? Advantages of GPT Disk over MBR Disk

According to the comparison table, it's clear that the advantages of GPT disk exceed MBR disk, which is especially obvious in the following aspects:

  • Faster Boot Speed: GPT UEFI can load the operating system faster than traditional MBR BIOS boot mode.
  • Better Operating System Compatibility: GPT has better OS compatibility than MBR as it supports most operating systems, including Windows Server and macOS.
  • Advanced Data Protection: GPT contains the backup of the primary GPT header and partition entries that protects data on the disk better.

When Do You Need to Convert MBR to GPT

Based on the above information about GPT disk, you may have learned the GPT exceeds MBR in many aspects. However, some users are not quite clear about when they need to convert MBR disk to GPT disk. 

Here, we will show you that in the following unique moments or situations that you need to convert MBR to GPT:

  1. 1). When you attempt to create more than four primary partitions on your disk
  2. 2). To make full use of a disk with more than 2TB of space
  3. 3). To install Windows on an EFI/UEFI boot disk
  4. 4). Receive error message: "Windows cannot be installed to this disk. The selected disk has an MBR partition table. On EFI system, Windows can only be installed to GPT disks" as shown in the below image.

The selected disk has an MBR partition table

When you encounter any of the above-provided cases, you will need to convert your disk from MBR to PGT. And you may follow the next part and pick up one method to accomplish the task with ease now. 

How to Convert MBR to GPT (3 Methods)

Whether you want to change a data drive from MBR to GPT without losing data or convert a boot drive from MBR to GPT during Windows installation, you will learn how to do it by following any method below.

Method 1. Convert MBR to GPT Without Data Loss Using EaseUS Partition Master

Reliable disk conversion tool - EaseUS Partition Master enables you to convert your disk from MBR to GPT directly without deleting the volumes nor saved data on your disk. It exceeds the Windows built-in utilities in the following two aspects during the process of disk conversion:

  • Keep All Partitions - Unlike Disk Management or DiskPart, EaseUS Partition Master doesn't require to deletion all partitions before the conversion.
  • No Data Loss - EaseUS Partition Master will keep all data safely stored on the disk while converting disk from MBR to GPT or vice versa.
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 Windows 10 is supported

Notice:
If you are going to convert a data drive, you can change it directly with the following steps.
if you are going to convert a boot disk to GPT (the disk contains your system), you need to make sure the motherboard on your computer supports the UEFI boot mode. Or you will encounter boot failure on your computer.

Steps to Convert MBR to GPT without Data Loss:

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

Step 2. Right-click the MBR disk that you want to convert and choose "Convert to GPT".

convert MBR to GPT - 1

Step 3. After that, find and click the "Execute 1 Operation" button on the toolbar and choose "Apply" to start the conversion. You need to restart your device to enable this change.

convert MBR to GPT - 2

Method 2. Change MBR to GPT via Disk Management

Both Disk Management and DiskPart commands require you to delete all partitions on your disk. Thus, if there are useful files on the disk, back them up in advance. If there are lots of files on your disk, you can use the free backup software - EaseUS Todo Backup to make a backup of your files, which is much faster and effective than manually copying and pasting. To change an MBR disk to GPT in Disk Management:

Step 1. Righ-click on "This PC (in Windows 10)" and choose "Manage".

Step 2. Select "Disk Management", right-click each partition on the disk you want to convert and choose "Delete Volume".

Step 3. After deleting all the volumes on your disk, right-click your MBR hard drive and choose "Convert to GPT Disk".

Convert MBR to GPT using Disk Management in Windows 10

Close Disk Management when the conversion process accomplishes. You may use your new disk to create as many partitions as you want or install a new OS on the disk now. 

Note: If you didn't delete all the partitions on the MBR disk, the "Convert to GPT Disk" option will be greyed out in Disk Management. You will see it choosable after removing the existing partitions.

Method 3. Convert MBR to GPT using DiskPart

Back up your disk and then follow the steps below to convert your MBR disk to GPT.

Step 1. Click the "Start" button and type cmd.

Step 2. Right-click "Command Prompt" and choose "Run as administrator".

Step 3. Type diskpart and hit Enter.

When you see a dialog box asking you for permission, click "Yes".

Step 4. Enter the following commands one by one and hit Enter each time:

DiskPart will delete all the partitions on your disk and then convert it to GPT during the process.

Click to copy

Step 5. Type exit when the conversion process completes. 

After this, you can use the new GPT disk to create partitions, install new UEFI system, etc. withou out any obstacles.

Tip: If you forgot to back up files and want to undo the clean command, you can use EaseUS partition recovery software to retrieve your partitions and files.

Bonus Tip: How to Convert MBR to GPT without Operating System

Besides converting data disk or system disk to GPT, some people may also want to know how to convert MBR disk to GPT without operating system or during Windows installation.

To convert MBR to GPT without OS is more complicated than the above case. For a manual resolution, you will need to boot the computer from the Windows installation CD, DVD or media and then apply CMD command to convert disk.

However, it's too complex for most ordinary people. To save your energy and offer you a reliable & efficient solution, we would like to recommend you try EaseUS Partition Master via a USB bootable disk.

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 Windows 10 is supported

As there is no operating system, you need to install this software to another healthy computer to create a bootable disk on a USB drive and then convert MBR to GPT without operating system or during Windows installation on your own with the following steps:

Step 1. Prepare a disc or drive. To create a bootable disk of EaseUS Partition Master, you should prepare a storage media, like a USB drive, flash drive, or a CD/DVD disc. Correctly connect the drive to another bootable computer. Then, launch EaseUS Partition Master, go to the "WinPE Creator" feature on the top. Click on it.

create easeus partition master bootable disk

Step 2. Choose USB or CD/DVD according to the device you connect to the computer.

create easeus partition master bootable disk

Step 3. Connect the WinPE bootable disk to the computer. Restart your computer and press F2/Del at the same time to enter BIOS. Set to boot the PC from "Removable Devices" (bootable USB disk) or "CD-ROM Drive" (bootable CD/DVD) beyond Hard Drive. Press "F10" to save and exit.

Step 4. Launch EaseUS Partition Master. Right-click the GPT disk that you want to convert and select "Convert to GPT". Then, you will add a pending operation.

convert MBR to GPT

Step 5. Click the "Execute Operation" button at the top-left corner. Next, click "Apply" and begin to convert the MBR disk to GPT.

convert MBR to GPT

Besides, you may also apply EaseUS Partition Master to convert GPT to MBR without operating system when you have a new blank PC or laptop. 

The Bottom Line

This page uncovers 3 major solutions for converting MBR to GPT disk without or without deleting partitions.

  • For a secure disk conversion from MBR to GPT, EaseUS Partition Master is the best choice. As its Convert to GPT feature doesn't require partition deletion, which as a result, no data loss will occur.
  • For a free but complex tool, Windows built-in tools - Disk Management and DiskPart are worth to try. Do remember to back up your data before deleting partitions so as to convert MBR to GPT. 

Besides this, another Windows built-in utility named MBR2GPT.EXE can also help you convert MBR to GPT without deleting data on the disk. However, it is only available in Windows Creator's Update and later and it's much more complicated than using the methods above. If you want to know more details, you can refer to the related Microsoft documents (https://docs.microsoft.com/en-us/windows/deployment/mbr-to-gpt) to get what you want.

FAQs About MBR to GPT Conversion

Apart from answering the question of "Should I use MBR or GPT" and "How do I change from MBR to GPT", at the end of this page, we also collected another 3 top concerned questions about MBR to GPT conversion that you may interested in.

Read on and check the answer to your question here now:

1. Is GPT or MBR better?

Generally, GPT is better if your hard disk is larger than 2TB. As you can only use 2TB of space from a hard drive which is of MBR style. 

Also, if you intend to create more than 4 partitions, GPT is better. GPT disk supports a maximum of 128 partitions and the MBR only supports up to 4 partitions.

If you need to install the latest operating system on your disk with a fast boot speed, GPT is better. GPT supports UEFI boot mode which loads the operating system faster than the traditional BIOS mode on MBR disk.

2. Should I use MBR or GPT for SSD?

According to the MBR vs. GPT comparison table at the beginning of this page, we have reasons to believe that GPT is more suitable for an SSD disk.

GPT supports more than four primary partitions on SSD. It supports more than 2TB storage (compare to MBR). Also, it is more compatible with the newer UEFI-based systems.

3. Will Converting to GPT delete data?

Windows Disk Management can change MBR to GPT disk for free, but it only supports to convert a non-partitioned hard disk. That is to say, you must delete all your partitions on the disk before the converting process, which will result in data loss.

Fortunately, you have a second choice that you can apply EaseUS Partition Master to convert MBR to GPT without data loss. You may revert back to Method 1 on this page for a detailed guide.

 
 

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.