EaseUS Partition Master

A simple partition tool to manage disk space in Windows 10

Fix and Repair EFI Bootloader in Windows 10/8/7

Updated by Daisy on Apr 21, 2021
Written by Tracy King

Are you having boot problems in your computer with the EFI bootloader? Having problems in your EFI bootloader that you are unable to boot Window system such as Windows 10, 8 or 7 smoothly in your PC? Here in this article, we'll provide you with effective solutions here to help you directly repair EFI bootloader and fix EFI boot errors in Windows 10/8/7. You can follow below methods to fix and repair EFI bootloader:

Note: If you prefer to fix EFI bootloader in Windows 10/8/7 with an easy but effective way, you can try Method 1 to apply professional partition manager software for help;
If you prefer free method and you are quite familiar with Windows system management jobs, Method 2 or 3 will guide you to fix EFI boot in Window 10/8/7 then.

Method 1. Use bootable disk to repair EFI bootloader on Windows 10/8/7

If you are having Windows EFI bootloader problems and unable to boot computer smoothly in Windows 10/8/7, don't worry. Professional partition manager software will support you to create a bootable disk to repair corrupted EFI bootloader without any problems. You may Google EaseUS Partition Master online or directly click below download button to get this partition manager software for fixing Windows 10/8/7 EFI bootloader.

Now let's see how to fix Windows 10/8/7 EFI bootloader issue with EaseUS Partition Master:

Step 1. Create a WinPE bootable disk

  • Launch EaseUS Partition Master, click "WinPE Creator" on the toolbar. Select to create the bootable disk on a USB drive. If your computer has a CD/DVD drive, you can also create the bootable disk to CD/DVD.
  • Click "Proceed" to finish the process.
create a bootable disk

Step 2. Boot EaseUS Partition Master Bootable USB

  • Connect the bootable USB or CD/DVD to your PC. 
  • Press F2 or Del when you restart the computer to enter the BIOS screen. Set and boot your computer from "Removable Devices" or "CD-ROM Drive". And then EaseUS Partition Master will run automatically.
rebuild MBR

Step 3. Rebuild MBR

  • Right-click the disk whose MBR is damaged. Choose "Rebuild MBR" to continue.
  • Select the type of MBR with the current operating system. Then, click "OK".
rebuild MBR
  • Click the "Execute Operation" button at the top-left corner and click "Apply" to build the MBR. After that, your computer can boot normally again.
rebuild MBR

After this, you can set BIOS boot order from your PC again. 

Notice:
If you lose some important files or data in the system partition after fixing EFI and rebooting system, don't worry. You can apply professional data recovery software - EaseUS Data Recovery Wizard to restore all your lost data with ease.

Method 2. Fix EFI bootloader in Windows 7

The ways to fix EFI bootloader are very different with or without Installation Media. Let's see how to fix EFI bootloader in Windows 7 with or without Installation Media:

2.1 Fix Windows 7 EFI bootloader with Installation Media

If you have the Installation Media, follow below tips to fix EFI boot in Windows 7:

1. Insert Windows 7 Installation Media (DVD/USB etc.) in your PC.

2. Restart PC and boot from Installation Media > Select "Repair Your Computer" > Select operating system and click next

3. Choose Command Prompt > Type below command orders and hit Enter each time:

  • diskpart
  • sel disk 0
  • list vol

4. Verify the EFI partition is using FAT32 file system and assign a drive letter to it > Type command and hit Enter each time:

  • sel vol
  • assign letter=:
  • exit
  • cd /d :\EFI\Microsoft\Boot\
  • bootrec /fixboot

5. After all these steps, you can then reboot PC, setting boot order from PC in BIOS. 

2.2 Fix Windows 7 EFI bootloader without Installation Media

If you don't have Installation Media, here below tips shall help you to fix EFI bootloader in Windows 7 then:

1. Restart PC and tab F8 till the Windows Splash Screen appears.

2. Select Repair your computer > Select Command Prompt from Recovery Options.

3. Type below command orders and hit Enter each time.

  • diskpart
  • sel disk 0
  • list vol

4. Verify if the EFI partition is using the FAT32 file system and assign a drive letter to it > Type below command orders and hit Enter each time:

  • sel vol
  • assign letter=:
  • exit
  • cd /d :\EFI\Microsoft\Boot\
  • bootrec /fixboot

5. Rebuild BCD store, type below orders in CMD and hit Enter each time:

  • ren BCD BCD.old
  • bcdboot c:\Windows /l en-us /s: All

Note: If you are creating boot entries on an attached USB flash drive or external hard drive, add /f between the ":" and "All".

If you are a Windows 10, 8.1 or 8 user, relax, in Method 3, you'll find suitable solutions to fix EFI bootloader in Windows 10/8.1/8 with ease.

Method 3. Repair EFI bootloader in Windows 10/8

Windows 10/8.1/8 users can also have two access to fix repair EFI bootloader with or without Installation Media. You may choose to fix this problem on your own:

3.1 Repair Windows 10/8 EFI bootloader with Installation Media

  • Insert Installation Media with PC and restart to boot from the Media;
  • For Windows 8.1/8 users: 

Select "Repair Your Computer" > "Troubleshoot" > "Command Prompt".

  • For Windows 10 users:

Select "Repair Your Computer" > "Troubleshoot" > "Advanced Options" > "Command Prompt". Type below command orders and hit Enter each time:

  • diskpart
  • sel disk 0
  • list vol

Verify the EFI partition is using FAT32 file system and assign a drive letter to it > Type command and hit Enter each time:

  • sel vol
  • assign letter=:
  • exit
  • cd /d :\EFI\Microsoft\Boot\
  • bootrec /fixboot

3.2 Repair Windows 10/8 EFI bootloader without Installation Media

If you don't have Installation Media for Windows 10/8.1/8, follow below guide to repair Windows 10/8.1/8 EFI bootloader without Installation Media:

  • Restart PC and tab F8 till Windows Splash Screen appears.
  • Select Repair your computer > Click Command Prompt from Troubleshoot.
  • Type below command orders and hit Enter each time: diskpart > sel disk 0 > list vol
  • Verify if the EFI partition is using the FAT32 file system and assign a drive letter to it > Type below command orders and hit Enter each time: sel vol > assign letter=: > exit > cd /d :\EFI\Microsoft\Boot\ > bootrec /fixboot
  • Rebuild BCD store, type below orders in CMD and hit Enter each time: ren BCD BCD.old > bcdboot c:\Windows /l en-us /s : All

Note: If you are creating boot entries on an attached USB flash drive or external hard drive, add /f between the ":" and "All".

Do You Need Specialized Services for System Boot Issues?
EaseUS also provides 1-on-1 remote assistance to fix the boot issue. If the solution above does not work for you, please contact our professionals via Email or LiveChat in this page. To ensure our professional assistance work, you are suggested to connect the unbootable system drive to a healthy computer when getting connected with us.

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Updated by Daisy

Daisy is the Senior editor of the writing team for EaseUS. She has been working in EaseUS for over ten years, starting from a technical writer to a team leader of the content group. As a professional author for over 10 years, she writes a lot to help people overcome their tech troubles.

Read full bio

Written by Tracy King

Tracy joined in EaseUS in 2013 and has been working with EaseUS content team for over 7 years. Being enthusiastic in computing and technology, she writes tech how-to articles and share technical solutions about Windows & Mac data recovery, file/system backup and recovery, partition management and iOS/Android data recovery.

Read full bio

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  • 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. I also think the overall look and feel of EaseUS Partition Master Free makes whatever you're doing with your computer's partitions easy.

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  • Partition Master Free can Resize, Move, Merge, Migrate, and Copy disks or partitions; convert to local, change label, defragment, check and explore partition; and much more. A premium upgrade adds free tech support and the ability to resize dynamic volumes.

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