[Full Guidance] Remove Double OS Boot Manager from BIOS

How can I remove double OS boot manager from BIOS? If you also have this question, this tutorial can help you by delving into the steps required to remove these duplicate OS boot managers from the BIOS, ensuring a smoother and more efficient system booting process.


By Tina / Updated on July 31, 2023

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What is dual boot manager in BIOS?

A dual boot manager is a software component that allows users to select which operating system to load when their computer starts up. This manager presents a menu that displays the list of installed operating systems, and the user can choose the desired one. The dual boot manager resides in the computer's BIOS and plays a crucial role in the boot process.

When the computer is turned on, the BIOS conducts a Power-On Self Test and then proceeds to the boot loader stage. The boot loader, also known as the dual boot manager, is responsible for loading the operating system selected by the user.

In the world of computers and operating systems, it's not uncommon for users to have multiple operating systems installed on a single device. However, managing multiple operating systems can sometimes lead to complications, especially when duplicate entries of the OS boot manager appear in the BIOS.

Therefore, learning the proper process to remove double OS boot manager from BIOS is necessary for users to smoothly boot from the target system. In the following content, you can get the detailed steps.

Boot Manager


Preparing for the Windows boot manager removal process

Before removing dual boot in Windows 10 or Windows 11, it is essential to take some precautionary measures to avoid data loss and ensure a smooth process.

Create a backup of all your critical data. While the removal process should not delete any files, it's always better to be safe than sorry.

Identify the duplicate entries in the boot manager. Take note of their names and locations to facilitate their removal later on.

The best method to remove Windows boot manager from BIOS

There is a distinct method for removing double OS boot manager from BIOS. It can be implemented practically, catering to the most computer enthusiasts- AOMEI Partition Assistant Professional.

Through the utilization of the "UEFI BIOS Boot Options Manager" function, users gain the capability to change the boot order seamlessly while their PC is operating normally. The program allows users to create backups of their current boot settings.

Moreover, this powerful tool provides an extensive list of all boot settings and device information, giving users a comprehensive view of their boot devices. Even irregular boot order occurrences can be detected through this feature, empowering users to efficiently remove any unnecessary boot options.

Let’s remove operating system from BIOS.

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Step 1. Begin by installing and launching AOMEI Partition Assistant. Once the program is open, head to the "Tools" main tab and then click on "UEFI BIOS Boot Options Manager".

Boot Options

Step 2. Boot your computer using an alternative startup item. Next, locate "Windows Boot Manager" and select the "Remove" button located on the right side of the screen.

Windows Boot Manager

Step 3. When successfully deleting the target Windows Boot Manager, you'll have two options. You can either restart your computer immediately by clicking "Restart Now" or simply close the Manager window by selecting "Cancel".

Restart Now

Note: The tool can be used on 11/10/8.1/8/7/Vista/XP, when you want to solve the boot problem on Windows Server devices, please turn to the Server Version.


Removing double OS boot manager from BIOS is essential for maintaining a smooth and hassle-free computing experience. By using the AOMEI Partition Assistant provided in this article, you can resolve booting issues, ensure system stability, and enjoy a more efficient booting process.

Besides solving the boot issue, the shared tool also can perform many disk management functions, such as Rebuild MBR, Partition alignment, Defrag disk/partition, Migrate OS system, Move installed programs to another drive, Clone disk, etc.

FAQs about removing dual boot manager

➹ What is a dual boot manager?

A dual boot manager is a software component residing in the BIOS that allows users to choose between different operating systems during the boot process.

➹ How can duplicate entries affect my system?

Duplicate entries can lead to booting issues, system instability, and conflicts between operating systems.

➹ Will removing duplicate entries delete my data?

No, removing duplicate entries from the boot manager will not delete your data. However, it's always advisable to back up your data before making any changes.

➹ Can I use third-party tools to remove duplicate boot entries?

While there are third-party tools available, it is recommended to use the built-in BIOS settings for removal to avoid potential complications.

➹ What should I do if the removal process goes wrong?

If the removal process encounters any issues, you can try restoring the BIOS settings to their defaults or seeking assistance from a professional technician.

Tina · Staff Editor
Tina is an English editor of AOMEI Technology. She has a positive attitude and full of energy. On her work, she always keeps thinking to figure out the solutions for users' problems, and writes the answers so that can help someone. In her daily life, she likes to sing, watch TV and sleep. She always being grateful and happy to all the things happened and all the people encountered.