How to Resize EFI System Partition on Windows 10/8/7

Daisy updated on Dec 11, 2018 to Partition Master | How-to Articles

Need help to extend EFI system partition in Windows 10

"How do you make the EFI partition on your system bigger without losing data? My EFI is 99MB large, and I need it to be at least 200MB so that I can install Mac on this PC. I already have Windows 10 installed. The built-in Windows 10 Disk Management tool won't allow me to operate on the EFI partition because the extend volume option is grayed out."

The EFI system partition (ESP) is a partition on a data storage device, usually an HDD or SSD that is used by computers adhering to the Unified Extensive Firmware (UEFI). ESP contains the bootloaders or kernel images for all installed operating systems, so users are not allowed to operate on such a partition easily. However, sometimes resizing EFI partition is demanded, it's significant to have a partition manager program that can help realize the goal, meanwhile, with a simple solution.

Download EaseUS Partition Master to extend or shrink EFI partition freely

To meet the huge demand of being able to resize EFI partition freely in the Windows operating system, EaseUS Partition Master is lately optimized and the new version now fully supports operation on EFI system partition. Click to learn in detail about the newest partition magic software that gives you the best experience to deal with your hard drive partitions, including the EFI partition, system partition, system reserved partition, and OEM partition.

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 Windows 10 is supported

How to resize EFI partition with EaseUS Partition Master:

Make sure the EFI partition is on a GPT disk. If not, convert MBR disk to GTP disk before further operation. After that, you can resize your partition by shrinking or extending it. The guide below will show you how to shrink a partition. (The following steps are performed on an MBR disk. You can apply the same steps to resize your EFI partition.)

 

Step 1: Install and launch EaseUS Partition Master

On the main window, right-click on the partition that you want to shrink and select "Resize/Move".

Run EaseUS Partition Master

Step 2: Adjust partition size

To shrink a partition, use your mouse to drag one of its ends to shrink partition space.

Adjust partition size

You can also adjust the partition size box to shrink the target partition.
Click "OK" to continue.

Confirm to decrease partition

Step 3: Shrink partition

Click the "Execute Operation" button and "Apply" to keep all changes.

Keep changes
 
 

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Frequently Asked Questions

Why Choose EaseUS Partition Master?

"I've used Partition Master Professional many times to create, delete, format, move, rename, and resize partitions."PCWorld

"Partitioning tools have come a very long since the days of complicated command line utilities and EASEUS Partition Master is one of the most advanced programs available."TECH ADVISOR

"I love that the changes you make with EaseUS Partition Master Free aren't immediately applied to the disks. It makes it way easier to play out what will happen after you've made all the changes."Lifewire

Will the "Migrate OS" feature transfer the Windows system files only or the whole C drive?

To ensure that the migrated system will boot normally, the Migrate OS feature will transfer all the files in the system and the boot partitions. Generally, the boot partition is the C drive so the transfer will include all the files in C.

Does EaseUS Partition Master license apply to multiple computers?

The license of Partition Master Professional and Server editions can be used on 1 computer only, while that for for the Technician and Unlimited editions can be used on multiple machines.

What is the difference between EaseUS Partition Master Trial version and the Free version?

Free is for home users only, with most basic functions available such as partition resize and clone. While trial can help you understand how this product works and test what a full license can do on a business or server OS machine.

Will it cause any data loss after resizing the partition in EaseUS Partition Master?

Generally, it will not cause any data loss or boot issue by resizing a partition. However, in order to protect your data, we suggest that you backup the partition before resizing, in case of any unexpected situations such as power outages, computer hardware failures, etc. You can use EaseUS Todo Backup to backup the partition and its trial version is fully functioned for 30 days.

What should I prepare before resizing the partition?

On the partition that is going to be operated, there might be some files being occupied by other programs. To ensure a successful operation, we suggest that you close all the unnecessary software before resizing that partition. Otherwise, EaseUS Partition Master will detect the partition being locked by the other software and require a reboot to resize the partition under boot mode.

About EaseUS Partition Master

All-round disk & partition management software for personal and commercial use. Let it manage your storage drive: resize, format, delete, clone, convert, etc.