How to Remove GRUB from UEFI Dual Boot Using Windows 10/11

This step-by-step tutorial explains how to remove the GRUB bootloader from a UEFI-based dual-boot setup (Windows 10/11 + Linux) directly from Windows. The method uses only the built-in Diskpart utility and Command Prompt to mount the EFI System Partition and delete the Linux bootloader folder. This restores the Windows Boot Manager as the sole bootloader.

Important notes before starting:

• This process works only on UEFI systems (not Legacy BIOS/MBR). If your system is Legacy, this method will not work.
• It removes GRUB and prevents Linux from booting. Your Linux partitions remain intact unless you delete them separately using Disk Management.
• Backup important data before proceeding.
• Be extremely careful when selecting the correct disk and partition in Diskpart - choosing the wrong one can cause data loss.

Step 1: Open Command Prompt as Administrator

Press the Windows key and type CMD in the search bar.

Right-click on Command Prompt and select Run as administrator.

Click Yes when the User Account Control prompt appears.

Step 2: Launch Diskpart and Identify the EFI Partition

In the Command Prompt window, type the following command and press Enter:

Now run these commands one by one (press Enter after each):

Note: Replace 0 with the number of your main system disk (usually Disk 0 - the one containing Windows and the EFI partition). Confirm by checking the size.

Next, list the partitions:

Identify the EFI System Partition:

• It is usually 100-500 MB in size.
• Type is listed as System.

Select it (replace 1 with the actual partition number shown):

Step 3: Assign a Drive Letter to the EFI Partition

Assign a temporary drive letter (we will use X in this example - choose any unused letter such as Z or W if X is already in use):

Type the following to exit Diskpart:

Step 4: Access the EFI Partition and Delete the Linux Bootloader Folder

Type the assigned drive letter followed by a colon and press Enter:

List the contents to confirm:

Change into the EFI directory:

List the folders inside:

You will see folders such as:

• Microsoft (Windows bootloader - do NOT delete)
• BOOT (fallback boot folder)
• A folder named after your Linux distribution (examples below)

Common Linux bootloader folder names:

• Ubuntu → ubuntu
• Fedora → fedora
• Arch Linux → arch

Delete the Linux folder (replace ubuntu with your actual folder name):

When prompted Are you sure (Y/N)?, type Y and press Enter.

Step 5: Clean Up and Restart

Type the following to return to the root and exit Command Prompt:

Close the Command Prompt window.

Restart your computer completely.

Verification After Restart

Your system should now boot directly into Windows without showing the GRUB menu. The Windows Boot Manager is now the only bootloader.

Done.