Summary :

fix MBR

MBR is an essential part of booting the estimator. All the same, if the MBR of Windows is damaged, what you need do is to fix MBR. And then how can you lot rebuild MBR with ease? This post shows you how to fix MBR with the stride-past-pace guide.

Quick Navigation :

  • What Is MBR?
  • What Happens If MBR Is Damaged or Corrupted?
  • Fix MBR with Command Prompt
  • Set up MBR Windows 10 Without CD
  • Bottom Line
  • Fix MBR FAQ
  • User Comments

What Is MBR?

MBR, whose full name is principal boot record, is created on the get-go segmentation on your figurer when you lot install Windows. It is the first 512 bytes of your difficult disk. And it is a boot sector at the outset of the division, which is used to boot the estimator.

So MBR is the virtually important slice of data that enables your PC to find and identify the location of OS to allow Windows to boot.

However, if the MBR is damaged or corrupted, what will happen? In general, when MBR is damaged, your computer may fail to boot. And hither, we will just show you lot what happens if MBR is damaged or corrupted.

What Happens If MBR Is Damaged or Corrupted?

As we have mentioned in the above content, MBR is an essential role of booting the computer. Therefore, when it is damaged, your computer volition fail to boot and you likewise volition encounter dissimilar boot errors.

1. Bootmgr is missing.

When the MBR on your hard disk is missing corrupted, you may encounter the error bootmgr is missing.

two. Error loading operating system.

You may too encounter the issue fault loading operating system when the MBR is damaged or corrupted.

3. Operating System not found.

Many computer users complain that they see the problem operating system not institute when they boot their computer. So, this issue would occur when the MBR is damaged.

4. Invalid segmentation table.

The consequence invalid partitioning table often occurs when yous are booting your computer Windows 10/8/8.1/7.

five. Reboot and select proper boot device.

When you boot your computer, you lot may encounter the issue reboot and select proper boot device caused by corrupted or damaged MBR.

Related article: Pinnacle 3 Ways to Kicking Director Failed to Find Os Loader

From the above information, you can find that there are many boot errors when the MBR is damaged or corrupted.

Thus, practice yous know how to gear up these problems or do you know how to set MBR Windows 10/8.1/8/vii? If you don't know, don't worry. This mail will evidence you the footstep-by-footstep guide for Windows set up MBR.

Prepare MBR with Command Prompt

In this part, nosotros volition show y'all the first way to rebuild MBR. In this manner, you need to input different control prompt. And aiming at Windows 10/8.i/8/vii, we will evidence you how to fix MBR separately.

Ready MBR Windows 7

First of all, nosotros will evidence you how to set MBR Windows 7. Y'all can refer to the step past step guide.

Pace i: Create Windows Installation CD/DVD

To fix MBR, you lot need the Windows Installation CD/DVD to boot your computer since your reckoner is unable to boot from the operating organization. If you already have a Windows Installation CD/DVD, you tin ignore this step and just go to Stride 2.

  1. Click hither to download the Windows media creation tool.
  2. Run this tool and movement on according to the instructions to create the Windows Installation CD/DVD.
windows 10 media creation tool thumbnail

Don't know what Windows 10 Media Creation Tool is? Don't worry. This article will tell y'all what it is and how to use the tool to create installation media.

Step 2: Kicking computer from installation media

  1. Connect the installation media to your computer and kick from it.
  2. Select the language.
  3. Click Side by side.
  4. Click Repair your computer.
click Repair your computer

Step iii: Open the Command Prompt window

  1. Select a keyboard input method and click Side by side.
  2. Input the countersign if you lot have.
  3. Choose Command Prompt.
choose Command Prompt to continue

Step 4: Input the following control

  • bootrec /fixmbr
  • bootrec /fixboot
  • bootrec /rebuildbcd

Please hitting Enter afterwards each command.

type the commands to fix MBR

When the Windows fix MBR process is finished, you tin can go out the control line window and reboot your computer to check whether it can boot commonly.

However, if the control bootrec /rebuildbcd fails to piece of work, y'all can use the following command to export and erase the BCD store and using the Rebuildbcd command once more to fix MBR Windows 7. Please note yous need to hit Enter to continue after each command.

  • bcdedit /consign C:\bcdbackup
  • c:
  • cd kick
  • attrib bcd -due south -h -r
  • ren c:\kick\bcd bcd.backup
  • bootrec /rebuildbcd
type the commands

Then you are required to press Y to confirm adding the installation to boot list and exit the command line window.

Afterward this Windows fix MBR, you tin reboot your computer to bank check whether information technology tin kicking normally.

Ready MBR Windows viii/8.one/10

Now, we volition show you how to gear up MBR Windows 8/8.one and how to fix MBR Windows 10. As a matter of fact, to prepare MBR Windows viii/eight.1 and fix MBR Windows ten, the solutions are same. And hither, we volition show you how to fix MBR Windows x as an example.

We will show you how to fix MBR Windows x with the step-past-pace guide.

Step i: Kicking the reckoner from the installation media

  1. Create the Installation CD/DVD. If you lot don't know how to create the installation CD/DVD, you tin can refer to the Step 1 of fixing MBR Windows 7.
  2. Boot your computer from the installation media.

Step 2: Enter the Command Prompt window

  1. Afterward booting the computer from the installation media, click Side by side based on the instructions.
  2. Click Repair your figurer to continue.
  3. Click Troubleshoot > Avant-garde options > Command Prompt to continue.
enter Command Prompt window

Step 3: Input the post-obit commands

  • bootrec /fixmbr
  • bootrec /fixboot
  • bootrec /scanos
  • bootrec /rebuildbcd
type the commands

Tip: Please remember to hit Enter subsequently each command.

If the bootrec /rebuildbcd command fails to work, you tin input the aforementioned command of fixing MBR Windows vii to export and erase the BCD store and using the Rebuild BCD command once again to perform Windows ready MBR.

When you have finished all steps, yous can remove the installation media and alter the BIOS lodge. Then reboot your estimator to check whether your computer can boot ordinarily.

Since the manner to fix MBR Windows 8/8.1 is the same every bit the solution to set up MBR Windows 10, y'all can take the same way to perform chief boot record repair if you are running Windows 8/8.1.

Set MBR on EFI on Windows 10/eight.ane/viii

At hither, we will introduce some other situation of Windows set MBR. Do you know how to fix MBR if the disk is GPT?

Don't worry. Nosotros will show you how to repair MBR Windows 10/eight.1/8 with step by footstep guide.

Stride 1: Enter the Command Prompt window

  1. Boot the figurer from the installation media.
  2. Click Repair your calculator.
  3. Click Troubleshoot > Advanced options > Command Prompt to go along.

Step ii: Type the post-obit commands

  • diskpart
  • select disk 0
  • list vol

Step 3: Bank check the EFI partition and assign a drive letter

  • sel vol * (* represents the number of volume)
  • assign letter of the alphabet =10: (x represents the bulldoze letter)
  • leave

Note: The EFI partition must exist formatted to FAT32.

Step 4: Repair MBR Windows ten/viii.1/viii by inputting the following command

  • cd /d ten:\EFI\Microsoft\Boot\ (ten represents the drive letter of the alphabet)
  • bootrec /fixboot
  • ren BCD BCD. backup
  • bcdboot c:\Windows /50 en-us /s x: /f ALL

If the bulldoze alphabetic character where your operating system is installed is different, you demand to supplant the alphabetic character c with a different drive alphabetic character.

When y'all have finished all steps, yous can remove your installation media and exit the command prompt window. So reboot your computer to check whether your reckoner can kicking commonly.

Yet, if you lot don't have the Windows installation CD/DVD, how can y'all gear up MBR?

And in the following office, we volition show you how to fix MBR Windows ten without CD.

Set up MBR Windows 10 Without CD

In this part, we will show you how to ready master kick tape if you don't have the Windows installation CD/DVD.

To set up MBR Windows ten without CD, you need the aid of an MBR repair tool. Thus, the MBR repair software – MiniTool Partition Magician is strongly recommended.

MiniTool Sectionalization Sorcerer can help you to fix MBR with ease on Windows 7/8/viii.1/10, just requiring a few clicks.

MiniTool Partition Sorcerer is designed to optimize partition and disk use with its powerful features. It can completely control your partitioning and disk with its various features, such as migrating OS to SSD, cloning difficult drive, catechumen MBR to GPT, and so on.

Related article: 2 Reliable and Powerful MiniTool SSD Cloning Software (No Data Loss)

Thus, you can get MiniTool Segmentation Sorcerer Pro immediately and we will evidence y'all how to set MBR Windows 10/8.1/8/seven without Windows Installation CD/DVD.

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Step 1: Create the bootable media

  1. Install MiniTool Partition Magician on a normal figurer.
  2. Launch it to enter its main interface.
  3. Click Bootable Media feature to create the bootable media which can help you lot to boot your figurer.

Note: If you are running Windows x, you demand to create the bootable media on a normal reckoner that is also running Windows 10. If you are running Windows 7, you need to create the bootable media on the normal calculator running Windows 7.

create bootable media

Stride ii: Boot the computer from the bootable media

  1. Connect the bootable media to your estimator.
  2. Alter BIOS gild.
  3. Boot the computer from the MiniTool bootable media.

Related article: How to Kick from Burned MiniTool Bootable CD/DVD Discs or USB Flash Drive?

Pace 3: Repair MBR

  1. Enter MiniTool Recovery Surround.
  2. Select the system disk and correct-click it.
  3. Choose the Rebuild MBR feature from the context menu to fix MBR Windows 10/eight.1/8/vii.
choose Rebuild MBR to continue

Pace 3: Confirm the changes

Click Apply to confirm the changes.

click Apply to confirm the changes

Afterward you have finished all steps, you can reboot your figurer to check whether your computer can boot ordinarily.

As you tin see, to fix MBR, MiniTool Partitioning Wizard is easier than inputting the commands.

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Meanwhile, autonomously from the Rebuild MBR characteristic, MiniTool Sectionalization Wizard as well enables you to input the commands to fix MBR. It is the Command Panel characteristic of MiniTool Partition Wizard.

the Command Console feature

Later on inbound the chief interface, you tin besides input the same commands to gear up MBR Windows 7/8/8.i/10 even though you don't have the Windows installation CD/DVD.

So from this post, you tin can know different ways to prepare MBR Windows seven/8/viii.1/x. And if you encountered the corrupted or damaged MBR problem, you lot can effort these means to rebuild MBR.

I have encountered the damaged MBR problem, just I have used MiniTool Partition Sorcerer to repair MBR and now it tin can boot ordinarily. Click to tweet

Afterwards you have solved the problem, yous had better create a system image and so that you lot can use it to perform some recovery solutions when some accidents happen.

Lesser Line

In determination, we have introduced what the MBR is and what problems y'all may run into if the MBR is damaged or corrupted. And we also take introduced different ways to ready MBR.

Every bit far as I can see, the MBR repair tool – MiniTool Segmentation Magician is more convenient to rebuild MBR. At the same time, if you take whatsoever better solution to gear up MBR, please share information technology on the comment zone.

And if you take any problem of MiniTool Partition Sorcerer, delight experience free to contact us via the email [email protected].

Fix MBR FAQ

What does rebuild MBR do?

MBR is the master boot record, is created on the first partition on your computer when you install Windows. It is the outset 512 bytes of your hard disk. And it is a kick sector at the beginning of the division, which is used to boot the reckoner. When the MBR is corrupted, your calculator will fail to boot. Later on rebuilding MBR, your estimator volition kicking successfully.

What happens if MBR is corrupted?

The Main Boot Record is the essential office of the computer. If the MBR is corrupted, your computer will fail to boot.

Does rebuilding MBR delete data?

Rebuild MBR will non lose information. To rebuild MBR, you can employ the professional person partition manager – MiniTool Partition Wizard.

What causes MBR corruption?

MBR corruption can be caused by various reasons. The most three common ones would be a virus infection, a drive failure or an MBR overwrite acquired by a program.