How to delete EFI system partition in Windows 11/10/8/7? Although the deletion can prevent you from booting your PC normally, you can learn the full steps on this page to delete the EFI partition step by step.
The EFI System Partition (ESP) plays a vital role in the startup process of UEFI-based computers. Removing this partition is usually discouraged because it may prevent Windows from booting properly. Still, if your computer contains an additional or unused EFI partition on another drive, deleting it can help reclaim storage space.
In most situations, partitions can be removed directly through Disk Management. However, Windows blocks users from deleting EFI system partitions to avoid accidental damage, which is why the “Delete Volume” option appears unavailable.
Fortunately, there are alternative ways to remove EFI partition safely. Two commonly used solutions are DiskPart and AOMEI Partition Software.
DiskPart is a built-in Windows command-line utility capable of removing EFI partitions quickly and effectively. Despite its power, the tool is better suited for experienced users because it does not provide a preview function or undo option. A single incorrect command could result in permanent data loss.
For users with limited technical experience, AOMEI Partition Software offers a more beginner-friendly approach. Its intuitive interface, guided steps, and warning prompts make the partition deletion process simpler and safer to perform.
Whether an EFI partition can be removed depends entirely on how it is being used. In some situations, deleting it is harmless. In others, it can stop the computer from starting altogether.
✍ Here are the most common scenarios:
🔹 EFI partition on a USB installation drive:
Yes. Once Windows installation is finished, the EFI partition on the USB drive is no longer required and can be removed safely.
🔹 EFI partition on a secondary hard drive:
Yes, provided your computer boots from a different EFI partition located on the primary system disk.
🔹 EFI partition on the main system drive:
No. This partition contains essential boot files used to start Windows. Removing it will leave the operating system unable to boot.
🔹 Old EFI partition left behind after reinstalling Windows:
Yes. If a new and functional EFI partition already exists for the current operating system, the leftover one can usually be deleted.
Deleting an active EFI partition can cause serious startup issues. Since the partition stores boot information required by UEFI systems, Windows may fail to load entirely after removal.
On the other hand, deleting an unused EFI partition such as one located on a USB installer or an old secondary drive is generally safe and can help free up disk space.
Before removing an EFI System Partition (ESP), it is essential to take a few precautions to avoid serious system issues or data loss.
▶ Back up all important data
Deleting a partition is irreversible and will erase its contents completely. Make sure any critical files stored on the drive are safely backed up before continuing.
▶ Verify that the EFI partition is not in use
Check carefully whether the ESP is currently required by Windows or any other operating systems installed on the machine. In dual-boot setups or multi-drive configurations, the partition may still be actively used for booting.
Only proceed once you are certain the partition is not responsible for system startup or application dependencies.
There are two main approaches for users who need to delete healthy EFI system partition (ESP). One method uses the built-in Windows utility, DiskPart, while the other relies on a user-friendly third-party tool such as AOMEI Partition Software.
Before proceeding with either method, it is strongly recommended to back up the contents of the EFI partition. This ensures that important boot-related files are not lost during the process and helps prevent potential system issues.
With proper preparation, both tools can be used to manage or remove the EFI partition, depending on the user’s technical experience and requirements.
Removing an EFI System Partition (ESP) is generally not advised, as it contains the essential boot files required to start Windows. Deleting it may cause the system to become unbootable. Only proceed if you fully understand the risks and have a backup or recovery method ready.
If deletion is necessary, the built-in Windows tool DiskPart can be used. However, it is a command-line utility and requires careful execution, as incorrect steps may result in data loss or system failure.
Step 1. Press Windows + R to open the Run dialog box. Type diskpart and press Enter. A command prompt window will open.
Step 2. Enter the following commands one by one, pressing Enter after each:
list disk (displays all available disks on the system)
select disk 0 (replace “0” with the correct disk number)
list partition (Shows all partitions on the selected disk, including the EFI system partition)
select partition 1 (replace “1” with the correct partition number)
delete partition override (Forces deletion of the selected EFI partition)
Step 3. Once the process is complete and the system confirms the partition has been deleted, type exit.
If a boot error occurs after deleting the EFI partition, the system may fail to start normally. In such cases, a bootable USB drive may be required to rebuild or recover the boot configuration.
DiskPart is powerful but should be used with caution, as it does not provide recovery options or undo functionality.
In addition to DiskPart, third-party partition management software offers a more flexible and user-friendly approach for handling EFI partition tasks. A professional tool such as AOMEI Partition Software simplifies the entire process, allowing Windows delete EFI partition in just a few straightforward steps.
This type of software is designed to reduce complexity and minimize the risk of errors, making it suitable even for users without technical experience.
✍ Key advantages:
✔️ Compatible with Windows 11/10/8/7
✔️ Intuitive interface with easy navigation
✔️ No command-line operations required
With these features, partition management becomes significantly more accessible and safer compared to manual command-line methods.
A safe and reliable disk partition management tool that helps you migrate OS to SSD or HDD, reorganize disk space, and improve overall PC performance.
Step 1. Install and launch AOMEI Partition Software on your Windows computer, right-click the EFI system partition (here is F: drive) and select "Delete Partition".
Note: If you want to all the partitions on your drive, you can right-click the disk that contains unwanted partitions and choose "Delete All Partitions" from the menu.
Step 2. Select a way to delete the selected partition and click "OK" to continue.
Step 3. Back to the main interface, click "Apply" and then "Proceed" to commit the pending operation. It is deleting the system partition, so a reboot is required.
The EFI System Partition (ESP), often simply called the EFI partition, is a small but essential section of a storage drive created automatically when Windows is installed on a GPT disk. It typically appears with a size of around 100MB to 200MB and does not have a drive letter assigned. On systems like Windows 10, it is common to see multiple EFI partitions, especially after upgrades or reinstalls.
In simple terms, the EFI partition is a special boot-related partition used by modern computers that rely on UEFI (Unified Extensible Firmware Interface) instead of the older BIOS system. When a computer starts, the UEFI firmware accesses the EFI System Partition to load the necessary files required to boot the operating system.
As described by Wikipedia, the EFI System Partition is a dedicated partition on a storage device used by computers supporting UEFI. During startup, the firmware retrieves boot-related files from this partition to initialize the operating system and related utilities.
The EFI System Partition generally contains several key types of files, including:
☁️ Boot loaders are responsible for launching the operating system during startup.
☁️ Device drivers help the firmware recognize and interact with hardware components.
☁️ System utilities provide tools used during the boot process for system management.
☁️ Data files store configuration and supporting information required for booting.
The EFI partition acts as a crucial bridge that allows your computer to start Windows. It works as a pre-boot environment that must run before the Windows system partition can load. Without it, the operating system simply cannot start.
In other words, deleting the EFI System Partition will usually make the installed system unbootable. For this reason, Windows automatically protects and hides it to prevent accidental modification or removal. That is also why it does not appear in File Explorer and cannot normally be deleted through Disk Management.
🔔 Important notes
>> Do not modify the EFI partition if your system is running normally.
>> Any changes may disrupt the Windows boot process.
>> If your disk is running low on space, clean it properly instead of touching system partitions.
>> Focus on identifying large files or unused applications to safely free up storage.
>> In dual-boot setups (two Windows installations), EFI management may be required.
>> In such cases, carefully follow proper partition removal methods to avoid affecting the working system.
>> If you plan to reinstall Windows, there is no need to manually delete the EFI partition.
>> A fresh installation will automatically recreate and replace it as needed.
Yes. If your PC uses UEFI firmware and boots Windows from a GPT disk, the EFI System Partition is essential. It stores boot files required to start the operating system. Deleting it may make Windows unbootable unless another valid EFI partition exists.
Removing an EFI partition through DiskPart can be risky because it relies on manual commands and offers no visual guidance or safety checks. A single incorrect input may lead to system or data issues.
By contrast, third-party tools such as AOMEI Partition Software provide a more controlled and user-friendly experience. They typically include a graphical interface, step-by-step prompts, and built-in warnings, making them suitable for both beginners and experienced users who prefer a safer approach.
Windows automatically protects critical system partitions from accidental removal. The EFI System Partition (ESP) and recovery partitions are essential for booting the operating system and restoring it in case of errors.
Because of this, Disk Management disables the delete option for these partitions. This restriction helps prevent users from accidentally damaging the system startup configuration.
If you choose to proceed with DiskPart, follow these steps carefully:
Step 1. Search for “cmd”, right-click Command Prompt, and select Run as administrator.
Step 2.Launch DiskPart and type:
diskpart
list disk
select disk X (Replace X with the correct disk number, e.g., select disk 1)
list partition
select partition X (Replace X with the EFI partition number, e.g., select partition 1)
delete partition override
exit
Deleting an EFI System Partition should only be done when the partition is no longer required. Since the EFI partition stores critical boot files for UEFI systems, removing an active one can prevent Windows from starting. While DiskPart offers a built-in command-line solution, tools like AOMEI Partition Software provide a safer and easier alternative with a graphical interface. Always verify the partition is unused and back up important data before making any changes.