Fixed: Convert Main Disk from MBR to GPT

I'm trying to upgrade my Operating System from Windows 10 to 11. But I failed because my drive is an MBR. I can't convert it to GPT because the drive has multiple partitions, which Windows 10 created as system-reserved. Can someone provide some next steps? Thanks!

Best Answered by

Roxanne· Answered on Apr 24, 2023

Before responding to your query, let's start with a quick overview of MBR and GPT. MBR is a particular boot sector at the beginning of the partitions of a computer, which usually works as the loader of the OS. GPT, which stands for GUID Partition, forms a part of the UEFI as a standard of HDD or SSD partition tables, etc. In addition, all Operating Systems support GPT, but only part of them can support MBR, such as Windows 10, 8.1, and 7. Therefore, to upgrade your Windows system from 10 to 11, you must first convert MBR to GPT. 

According to your description, you have tried some ways and failed because you have multiple partitions on your MBR. Whether you use the command lines or Disk Management, you must delete all these partitions, which can lead to severe data loss. Fortunately, this post will offer a 100% work solution without deleting multiple partitions. Continue to read and find detailed information:

Since you don't want to delete the system-reserved partitions, EaseUS Partition Master is a perfect choice for third-party software. Its disk conversion tool will meet your demand of converting MBR to GPT without deleting any partition. And EaseUS Partition Master has a user-friendly interface, which enables you to operate this process simply and safely.

Free Download 

Windows 11/10/8/7100% Secure

Follow the specific steps to use EaseUS Partition Master:

Step 1. Download and install EaseUS Partition Master on your PC.

Step 2. Find "Disk Converter" from the left panel, check the "Convert MBR to GPT," and click "Next."

Step 3. Select the target MBR disk, and click "Convert" to proceed.

After you finish the process, your MBR disk should be changed into GPT, and you can update your Operating System now.

Looking for more information about converting the main disk from MBR to GPT? Click the following link to see more:

Related Article: Guide on Convert GPT to MBR

People Also Ask

Best Ways to Free Up Data Server Storage, Any Suggestions?

This page will provide a variety of effective ways to free up disk space. With the methods provided in this article, you can increase storage space and maximize the efficiency of disk usage.


Feb 28, 2023

Is It Possible to Convert from MBR to GPT, Keeping Installation and Programs?

Many users are worried about: Is it possible to convert from MBR to GPT, keeping installation and programs. This article will answer your question and give you a full guide on converting and changing boot mode.


May 04, 2023

How Can I Increase Windows Server 2012 Disk Beyond 2TB, Help

This short page will teach you how to increase disk beyond 2TB on your Windows Server 2012. This passage will recommend a quick and easy way to help you.


Mar 09, 2023

Is There Any Way to Change Legacy BIOS to UEFI BIOS?

This article will offer a solid way to help users convert MBR to GPT and change Legacy BIOS to UEFI BIOS on the computer. Read and find more details.


Apr 25, 2023

Help, My Disk Space Beyond 2TB Will Be Unusable

Why my disk space beyond 2TB will be unusable, and how to solve this problem? This article and help with this issue. Dive into learning.


Mar 14, 2023

Is It Possible to Convert Boot Drive From MBR to GPT Without Data Loss

Are you confused that you are not sure about the question of that is it possible to convert boot drive from MBR to GPT without data loss? Do not worry, this passage will tell you the answer and provide some methods with detailed steps for you. Now you can read this passage.


Apr 25, 2023