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Use MBR2GPT.EXE Step 1. Click on the Windows Start button; Step 2. Type Command Prompt in the search box; Step 3. Right-click...Full steps
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If you are into the Windows operating system, you should have come across a situation the MBR2GPT conversion failed error affects your functionality. So, how do we fix MBR2GPT disk layout validation failed? How about checking out the issues that you are likely to face concerning the MBR2GPT validation failed and the problems that it may come across? Please read the below article; it will guide you to fix it properly. 

What is MBR2GPT.EXE?

What is MBR2GPT? This service is all about converting the disk from the Master Boot Record (MBR) to the GUID Partition Table (GPT) partition style. This process is done without the need for modifying or deleting data on the disk. The MBR2GPT commands are known for providing you access to one of the unique experiences in terms of a great degree of knowledge par excellence. 

attempting to convert mbr2gpt using command prompt

The service is designed to provide you access to an option for running from within Windows Preinstallation Environment (Windows PE) command prompt. This can come quite handy enough in providing you access to creating more than four primary partitions on a Hard drive, and in addition to that, it helps you get access to every content from the system storage. 

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

How to Use MBR2GPT.EXE? See Correct Steps

Several techniques are available to access one of the superior experiences in using MBR2GPT.exe. The MBR2GPT can be used on Windows 10 version number 1703 and later. 

You can begin using the MBR2GPT.exe through the command prompt. The command for the purpose is  mbr2gpt /validate /disk:1 /allowFullOS. This task can help determine whether the disk is eligible for conversion or not. If any of the checks fail, you will find that you will receive an error message. 

Use the following steps to convert MBR to GPT in Windows 

Step 1. Click on the Windows Start button.

Step 2. Type Command Prompt in the search box.

Step 3. Right-click on Command Prompt and click Run as administrator.

Step 4. Type MBR2GPT.EXE /validate /disk:1 /allowFullOS and Press Enter to validate the disk drive.

attempting to convert, but disk layout validation failed for disk 1

You may get a successful message Validation completed successfully, or a message Disk layout validation failed for disk 1.

If the validation is successful, the Next step is to convert it to GPT.

Step 5. Type next command is MBR2GPT.EXE /convert /disk:1 /allowfullos.

Now, it will begin the conversion of your files. If mbr2gpt conversion failed, You need to figure out the possible reasons. 

Why does MBR2GPT fail?

On most Windows systems, you would find that MBR2GPT works fine. However, there are several cases where you find that MBR2GPT conversion failed and will not complete on specific systems. There can be several reasons that can cause the MBR2GPT conversion error, and let us discover how to fix it. 

Some of the return codes that you are likely to come across can include

Comparison Data recovery service provider
0 Conversion completed successfully.
1 The user canceled the conversion.
2 Conversion failed due to an internal error.
3 Conversion failed due to an initialization error.
4 Conversion failed due to invalid command-line parameters.
5 Conversion failed due to an error in reading the geometry and layout of the selected disk.
6 Conversion failed because one or more volumes on the disk are encrypted.
7 Conversion failed because the geometry and layout of the selected disk do not meet the requirements. 
8 Conversion failed due to an error while creating the EFI system partition.
9 Conversion failed due to an error installing boot files.
10 Conversion failed due to an error while applying the GPT layout.
100 Conversion to GPT layout succeeded, but some boot configuration data entries could not be restored.

Here are a few fixes that you would need to check out. 

Layout conversion failed

This can result from the use of the service on the unsupported version of Windows. You will get an error message LayoutConversion: Layout conversion failed. Error: 0x00000032[gle=0x00000032]; Cannot perform layout conversion. Error: 0x00000032[gle=0x00000032]. 

"MBR2GPT cannot find OS" when converting the data disk

The service is designed to work with and is used to convert any MBR-formatted SYSTEM disk (OS disk) to GPT. It will not work on any of the data disks. The service only works with the disks where the operating system has not been installed. 

MBR2GPT Error Happen? Use Another MBR to GRT Converter

Suppose you think the service has any issues, or the MBR2GPT.ext does not work on any of your systems. In that case, there are several options wherein you would find the use of the third-party converter would provide you access to one of the unique experiences in achieving more positive results. We would recommend using the EaseUS Partition Master as one of the individuals and excellent options that you would find highly unique in almost every way possible. 

Free Download 

Windows 11/10/8/7100% Secure

The tool should be an excellent choice for almost all your needs and expectations regarding the Convert MBR System Disk to GPT for Windows 11 Upgrade. It should be your best choice for a host of practical solutions to MBR2GPT conversion failed 0x00000. 

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

Some of the features that you would find unique in almost every respect would include 

  • An easy way to migrate Windows 11 to a new SSD with just one single click.
  • It can also be your great choice in helping you manage the partitions on Windows 11.
  • It doubles up as an excellent means to help you clone and upgrade disks without data loss. 
  • It should also be one of the best disk wipe software to free up your disk space in a very flexible manner.

The feature offered by the tool in converting the disk style from MBR to GPT or GPT to MBR without any data loss is what you would find highly unique in more ways than one. The service's primary and logical partition converter options can be quite an excellent method. You would indeed find it one of the most amazing tools ever. 

The Concluding Thoughts

If you want to run MBR2GPT.exe, you need to be running Windows 10 1703 versions. However, there are times when your system may not respond to the MBR2GPT.exe tool. That would mean you need to go with the options such as any third-party tool for MBR2GPT conversion. 

The EaseUS Partition Master should be your prime choice for the purpose. It provides you access to a host of advanced options and features to get the best possible experience ever in almost every extent. 

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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