Use Partition Expert to resize SSD partition. Run the program and click Yes when the UAC(User Account Control) dialog shows, we’ll follow steps below to resize a partition (C Drive, for example): Step 1: Create unallocated space.

1. You can extend the partition using the Windows built-in tools if it has an unallocated space to the right of it (Windows 10 cannot extend primary partition to the right into unallocated space). In my case, I cannot extend the C: drive because it is blocked by the recovery partition (Windows RE). So, prior to extending the size of the system.
2. Solution: You cannot resize or extend system reserved partition with Windows built-in tool Disk Management. When you select the target partition and try to expand it, you will only find the Extend Volume feature is grayed out. It is because there is no unallocated space right next to the system reserved partition.

Nov 23, 2020 • Filed to: Windows Computer Solutions • Proven solutions

When your computer's EFI partition gets missing and you cannot boot the computer anymore, do you know how to get it back? You most probably do not, since you are here. Well, in this article, you will be taught two great methods through which you can restore EFI partition on Windows 10. If you do not have comprehensive knowledge about EFI partition, you will learn it here.

Also, for missing files from unbootable computers, the Recoverit Data Recovery tool will be introduced to you to recover those files back. The article promises to be educative.

What is EFI Partition?

EFI system partition (ESP) is a partition found on a storage device such as a hard drive, the files of which are used by UEFI (Unified Extensible Firmware Interface) to start different utilities, as well as the installed operating system i.e Windows. EFI stands for Extensible Firmware Interface. EFI partition creates various sections on the hard disk of your computer. The information stored in these different sections is normally managed on a separate basis by Windows OS. EFI partition contains four major parts including device drivers, data files, boot loaders, and system utilities.

What Will Happen if EFI Partition is Missing?

As mentioned above, EFI partition is quite useful to Windows systems, especially those that use the Unified Extensive Firmware Interface (UEFI). Now, if the EFI partition is missing, there will be a problem with your system booting. While the boot loader (UEFI in this case) is tasked with loading all the necessary utilities and files before the booting sequence is complete, the ESP resolves any errors that could prevent the booting from being a success. In a nutshell, if the EFI partition goes missing, your Windows will be unable to boot.

Restore EFI Partition in Windows 10 via Command Prompt

To restore or create an EFI partition in Windows 10 using Command Prompt, follow these steps:

• Use your Windows 10 installation or bootable media to boot your PC since your PC is unbootable on its.
• When the computer is on the first screen, press these keys on your keyboard: 'Shift' and 'F10', altogether. This shortcut will lead you to the 'Command Prompt' window

• In the window, type in these commands, remembering to press the 'Enter' key after you type each command:
  diskpart
  list disk
  select disk # (choose the location where you initially deleted the EFI partition from, for instance)
  list partition
  create partition EFI size=260
  format quick fs=fat32
  list partition
  list volume (input the volume letter where your Windows has been installed)

• Continue by inputting the following too, with 'Enter' taking you to the next command:
  exit
  bcdboot c:windows (where 'c' is the volume letter of the Windows partition)

• Remove the installation media of Windows from the computer and reboot it.

Restore EFI Partition through Clean Installing Windows 10

Another method with which you can restore the EFI system partition is via clean installing Windows 10 altogether. The steps involved are:

• Create an installation media for Windows
• Change your BIOS boot order to 'Removable device' if you are using a USB.

• If you are using DVD/CD, then change the order to start with 'CD-DVD Drive'

• Exit the window by clicking 'Yes', has agreed to save the changes made

• Restart your computer and insert the installation media into it to begin the clean installation. Choose the keyboard input, your choice of language, currency, and time formats. To continue, click 'Next'

• Tap the 'Install now' button

• Read the license terms and tick to agree to them, then move to the far bottom right of the window and select 'Next'

• Choose the option 'Custom: Install Windows only'. Note that all your files will be deleted in this process so if you wish, use the bootable media to backup all your files first.

• Choose to completely delete both system and primary partitions to have a completely clean Windows install. This is instead of formatting these partitions

• Choose the space that has not been allocated and select 'New' to create a new partition.

• Follow the instructions for creating a new partition till Windows set up and restart.

How to Recover Data from an Unbootable Computer Due to Broken EFI Partition

Because EFI partition is necessary for your computer to boot, a broken or missing EFI partition will prevent you from booting your computer. What happens to the data stored inside the computer then? Do they get lost forever or till you fix the problem? Of course not! With Recoverit Data Recovery, you can retrieve all your data, no matter the format

This expert tool recovers data from crashed systems, corrupted system files or drives, SD cards with errors, malware-infected systems or disks, and so on. Using the steps below, you can launch the user-friendly Recoverit and recover all your missing data:

Step 1 – Create Bootable Media

Create a bootable media on a different computer, one that works fine. To do this, you need an empty USB flash drive or CD/DVD. Insert any of these devices to the computer, install and launch the app on it. Select the option that lets you recover your files from a crashed system. Begin by clicking 'Start'.

To create the bootable media properly, select the option that applies to you. If you are using a USB, you will be prompted to 'Format'. Do this and choose the 'Create' button. If your device is a CD or DVD, just go ahead to 'Create'.

Recoverit will download the necessary firmware for the bootable media creation. Then it will format your drive and create the media. Now, you should eject the CD/DVD or unplug the USB, as the case may be.

Step 2 – Boot Computer with Bootable media

Change your BIOS boot order to 'Removable Device'. Plug the bootable media into your system and restart it. Plug another external drive with which you will store your recovered files.

Step 3 – Select Recovery Mode

Click on 'Data Recovery' > 'Start' to get Recoverit to scan the drive for your missing files.

Step 4 – Recover and Save

You can preview the files even while Recoverit is scanning and retrieving them. Afterward, save the files in the external drive by clicking 'Recover'.

The Bottom Line

You can restore the lost EFI partition through Command Prompt or via a Windows 10 clean installation. Both methods are quite effective so either one you choose is fine. If you cannot boot your computer because the EFI partition is broken, Recoverit Data Recovery can restore your system files and data.

Computer Data Recovery

Windows PE

System problems

PC Errors

Have you ever encountered system partition size problem during Windows 10 upgrade or system install? Sometimes, you may find that you are unable to upgrade your computer to Windows 10 operating system or install Windows 10 updates because it reports alert message saying there is not enough free space on system partition. Do you want to change the partition size for Windows 10 system partition when getting warning message C drive is running out of disk space? This article will share all methods to free resize system partition on Windows 10 to resolve your problem.

Free to Change System Partition Size without Software on Windows 10

You probably know that there are lots of partition tools for changing the size of system partition on Windows 10, but the fact is that you can resize system partition on Windows 10 without relying on any partition software. You can shrink or expand size of system partition on Windows 10 with Disk Management.

Windows 10 Disk Management is Windows built-in disk management tool, which enables you to manage disk space on Windows PC for free. Therefore, you can follow the steps below to change Windows 10 system partition size without relying on any software.

Step1. Access Disk Management on Windows 10

There are different ways to open Windows 10 Disk Management, such as:

Solution 1: Right click 'This PC' > click 'Manage' > click 'Disk Management'

Solution 2: Press 'Win' + 'R' on keyboard of your computer > type 'diskmgmt.msc' in the Run box and click 'Ok' button

Solution 3: Switch to Start screen on Windows 10 and type 'Partition' in the search box > click 'Create and Format Hard Disk Partitions' option

Step2. Shrink partition

Resize System Reserved Partition Windows 10 Pro

You can shrink partition on Windows 10 after opening Disk Management.

Shrink system partition – If you want to decrease partition size of system partition in Windows 10, you can shrink system partition under Disk Management by right clicking the C drive and then click 'Shrink Volume' option.

Shrink data partition – If you need to increase size of system partition on Windows 10, you need to squeeze free space from other partition. Therefore, you can right click another data partition and then click 'Shrink Volume' option to get some unallocated space.

Tip: You can only shrink a partition which has enough free space.

Resize System Reserved Partition Windows 10 Activator

Step3. Extend system partition

After shrinking partition, you can get some free space which usually shows as unallocated partition under Disk Management. You can free partition software for server 2008 or data partition, but it has some limitations. You can only extend a partition when there is contiguous unallocated space located on the right side of it on the same hard drive. Windows 10 does not allow you to extend a partition if the unallocated space is on its left side or the unallocated space is not adjacent to the partition you want to extend. Therefore, you must make sure that the unallocated space is on the right side of the C drive if you need to extend system partition on Windows 10.

Resize System Reserved Partition Windows 10

What can you do if you are unable to extend C drive space without contiguous unallocated space on Windows 10? You may delete the partition located between the C drive and unallocated partition. Otherwise, you may need to use partition magic software for Windows 10.

Resize System Partition on Windows 10 with Freeware

IM-Magic Partition Resizer Free is free partition magic software which is able to work on all Windows platform, so you can use it to change system partition size whether you want to extend or reduce the size of this partition on Windows 10. This partition software enables you to shrink partition to get unallocated space, move partition to move the unallocated space close to the system partition and finally add the unallocated space to the system partition.

Resize System Reserved Partition Windows 10

Download IM-Magic Partition Resizer Free Edition