By Dervish / Last Updated May 12, 2023

Can install Windows 11 on MBR?

Can you implement Windows 11 MBR installation? This may be a question in the minds of many people.

In fact, Windows 11 can be installed on MBR disks. There are two ways to install Windows 11. If you want to upgrade from an old Windows version to Windows 11, you can only install the system on a GPT disk, because Windows 11 needs to be booted by UEFI boot mode; but if you plan to clean install Windows 11, you can install it on an MBR disk.

Step-by-Step: Achieve Windows 11 MBR installation

Do you want to know how to install Windows 11 on MBR? I will show you how to edit the Windows 10 bootable USB to install Windows 11. The edited Windows 10 bootable USB will install Windows 11 and bypass all Windows 11 check programs.

Warning: Please backup computer before upgrading to Windows 11, because install Windows 11 on MBR will erase all data on the PC.

Step 1. First prepare an 8 GB or above USB, and download Windows 10 installation media to the USB.

Step 2. Download the Windows 11 ISO file to the computer and mount it.

Step 3. Open it after mounting, find the Source folder and copy the install.wim file.

Step 4. Then open the created Windows 10 bootable USB in Windows Explorer and delete the install.esd file in the Source, and then paste the install.wim file you just copied. (If it prompts that the file is too large to be moved, you need to convert the USB to NTFS file system first).

Step 5. Then run Windows 10 setup in USB and select the following options.

Step 6. When finished, Windows will restart the PC and ask you to upgrade your current Windows or install it on a new drive.

Step 7. Select upgrade your current Windows, you will see the Windows 10 installation interface, but in the end it installs Windows 11.

If your system drive is MBR partition style, you can upgrade to Windows 11 through the above steps. But this step is not easy for ordinary users, and if you don't back up, you will lose all your data! In order to avoid this situation, we can take another method of installing Windows 11.

Convert MBR to GPT for Windows 11 installation

As mentioned at the beginning, you can upgrade from the old version to Windows 11. But some users may say “What should I do if my system disk is not GPT but MBR?”. Don’t worry, we can convert MBR to GPT for Windows 11.

To convert MBR to GPT successfully, I recommend you to use AOMEI Partition Assistant Professional. This is an excellent MBR to GPT converter that allows you to convert system/data disk from MBR to GPT without losing data. Before starting, please make sure that your motherboard supports UEFI boot mode. If not, the converted PC may not boot normally.

Download Demo Win 11/10/8.1/8/7/XP
Secure Download

If your PC does not support UEFI boot mode, you can also enjoy Windows 11 by creating a Windows 11 bootable USB drive.

Step 1. Install and run AOMEI Partition Assistant Professional. Right-click the disk (take the system disk as an example) and choose “Convert to GPT”.

Step 2. Click “OK” to confirm your operation.

Step 3. Click “Apply” to commit the pending operation.

After that, you have converted the system disk from MBR to GPT successfully. Since the GPT disk matches with UEFI, so you also need to change the boot mode from BIOS to UEFI.

1. Same as the previous steps, enter the BIOS settings when the computer is turned on.

2. Use the arrow keys to select UEFI/BIOS Boot Mode in the Boot column, and then change Legacy to UEFI. Then saving and exit.

After rebooting, you can see that your system disk is already a GPT disk.

Upgrade from Windows 10 to Windows 11

Finally, you just need to go to “Settings”> “Update and Security”> “Windows Update”, and then click “Check for Updates”. If available, you will see Windows 11 feature updates. Click Download and Install to complete.


This article not only provides you with how to achieve Windows 11 MBR installation, but also shows you the detailed steps to convert MBR into GPT for Windows 11. If you want to use AOMEI Partition Assistant on Windows Server, please upgrade to AOMEI Partition Assistant Server.