FREE MBR Repair Tool: Fix MBR on Internal/External Hard Disk

Jean updated on Sep 10, 2020 to Partition Manager | How-to Articles

free mbr repair tool

You can find the best MBR repair tool, which allows you to repair your damaged MBR efficiently and effectively. If you are familiar with CMD, repair MBR via Command Prompt. Apply the best Windows 10/8.1/8/7 MBR repair tool freeware to quickly fix corrupt/damaged MBR on any device.

Quick Navigation  to MBR Repair:

  1. Solution 1. Repair Damaged MBR with MBR Repair Tool
  2. Solution 2. Repair MBR via Command Prompt
  3. Solution 3. Turn to Professionals

Needed Tool:

Download Now

 Windows 10 is supported

MBR is short for Master Boot Record. It plays a vital role in computer system booting, as well as a partition table for arranging and checking the partitions on hard drives. The Master boot record is created when you first install Windows on the first partition you create. If the MBR of Windows operating system hard disk or external hard drive is damaged, you won't be able to boot into Windows. All Windows versions - Windows XP, Vista, 7, or 8 – use MBR and, if damaged, you won’t be able to boot.

How to Tell Your Hard Drive MBR Is Damaged or Corrupted

What's the sign of your hard drive MBR is damaged? Except that the precise error message shows you that master boot record is broken, there are other clues you can determine whether your MBR is corrupted and needs instant repair! For example, MBR error 1, MBR error 2, MBR error 3...

The problem, along with a damaged MBR on a hard drive or some externals is that Windows will no longer work, and it will fail to find and load the operating system because the master boot record is a crucial part of your PC's startup system. Usually, the following reasons are the leading causes of an MBR error:

  • Virus infection
  • Drive failure
  • Invalid partition table
  • Missing Operating System
  • Operating System not found
  • Non-System disk or disk error

Relax, if you are faced with MBR corruption. Here we provide you with two effective ways to repair MBR as the following content shows.

Solution 1. Repair Damaged MBR with MBR Repair Tool

EaseUS MBR repair software assists you easily in rectifying MBR problems on a hard drive, external hard drive, and USB flash drive in Windows operating system and Windows server operating system without any hassle. All you need to do is to download the free partition software on an ordinary computer and automatically repair MBR with a few clicks.


  • It is effortless to use.
  • You can preview changes before applying them.
  • The disk/partition conversion option is available.
  • It supports to merge small partitions into a large one.
  • It can clone an entire disk to another even the destination partition is smaller than the source.

How to Fix the MBR in Windows 10/8.1/8/7

Download Now

 Windows 10 is supported

Step 1. Create a WinPE bootable disk.

  • Download and launch EaseUS Partition Master on a new PC which runs the same system as yours.
  • Click "WinPE Creator" on the toolbar. And 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. Rebuild MBR.

  • Connect the bootable USB or CD/DVD to your PC.
  • Press "Del" when you are restarting the computer. Boot your computer from "Removable Devices" or "CD-ROM Drive". And then EaseUS Partition Master will run automatically.
  • Right-click the disk whose MBR is damaged. Choose "Rebuild MBR" to continue.
rebuild MBR
  • Select the type of MBR with the current operating system. Then, click "OK".
rebuild MBR
  • Click the "Execute 1 Operation" button at the top-left corner and click "Apply" to build the MBR. After that, your computer can boot normally again.
rebuild MBR

Solution 2. Repair MBR via Command Prompt

If you are familiar with Command Prompt, you can manually repair the MBR corruption issue with CMD. If you cannot boot to your system, you need to start the computer with the Windows 10/8/7 installation DVD. If you don't have one at hand, you need to create one with Windows Media Creation Tool. Here's an example of fixing the MBR in Windows 10 with CMD.

Step 1. Boot from the original installation DVD (or the recovery USB)

Step 2. At the Welcome screen, click "Repair your computer" on the lower-left corner.

Step 3. Choose Troubleshoot > Advanced Options > Command Prompt

repair mbr using cmd

Step 4. When the Command Prompt loads, type the following commands and press Enter after each:

Click to copy

Step 5. When it completes, exit the Command Prompt window, eject the DVD, and restart the computer.

Solution 3. Turn to Professionals

If you think it is hard for you to fix MBR and repair MBR by yourself, you can turn to professional 1-on-1 remote assistance.

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.

What Is the Best MBR Repair Tool

There are many free methods for you to fix and repair the corrupted MBR on any storage device in Windows, among which one of the widely applied MBR repair methods is to use a Command Prompt and run the bootrec.exe /fixmbr command. Even so, it's not a smart choice because they need to search for more tutorials to learn how to create a system repair disk to enter the Windows Automatic Repair mode.

Alternatively, things become much easier when you get acquainted with an MBR repair tool! EaseUS Partition Master comes with a feature called Rebuild MBR. This unique and powerful feature makes it the most popular free MBR repair tool in fixing the damaged master boot record of your hard drive. Here's a comparison table, you can tell which is the best free MBR repair tool.

Comparison EaseUS MBR Repair Software Command Prompt
Easiness Easy to use Hard
Supported OS Windows 10/8.1/8/7/Vista/XP Limited
Cost Free Free
Tech Support Yes No

Bonus Tip - How to Back up Data Without OS

Before you are going to repair your MBR, you'd better back up files in advance. If the damaged MBR is a system disk, you are unable to boot into Windows 10/8/7. You'd better back up data or your system without booting into OS. If you have a backup, you can restore wanted data and system with ease. Professional back and recovery software from EaseUS is my suggestion. EaseUS Todo Backup is a reliable data backup software for users, backing up and restoring files fast on a Windows-based computer.

back up mbr data without os

To Sum Up

It is widespread to receive the "Master Boot Record of this hard drive is damaged" error. You can solve this case quickly as long as you follow those methods above. By the way, EaseUS MBR repair tool can not only rebuild MBR but also can check hard drive for errors. It will check the bad sectors on partition and perform the surface test for a disk. If you have other disk errors, you can also turn to this tool.

Free MBR Repair Tool FAQs

We have provided you with three practical ways to repair MBR. You might have fixed your MBR with the help of these methods. If you still have questions on MBR repair, read on.

How do I fix the MBR on my hard drive?

To fix MBR on a hard drive:

Step 1. Download and launch EaseUS Partition Master.

Download Now

 Windows 10 is supported

Step 2. Create a WinPE bootable disk.

Step 3. Rebuild MBR.

Which tool should you use to repair a corrupt MBR on a disk?

EaseUS MBR repair tool is the best tool that you should use to repair a corrupt MBR on a disk. Although, the main way to fix the MBR is to use a command prompt and run the bootrec.exe command. In versions of Windows before Windows 8 and 10, you usually accessed the command prompt through recovery media like a DVD disc or USB drive. According to the comparison table, EaseUS is much suitable.

What does rebuild MBR mean?

MBR is a particular type of loader code at the very beginning of the hard disk of a computer. It contains an operating system bootloader and the partition table. Rebuild MBR with EaseUS MBR repair tool helps rebuild MBR in quite simple operations even if Windows cannot boot.

What causes MBR corruption?

MBR errors can have different causes: 

  • A virus infection
  • A drive failure
  • An MBR overwrite caused by a program and more.

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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.

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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.

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