Server Partition Manager

Summary: Use MiniTool Partition Wizard to rebuild MBR Windows 10 when your operating system fails to boot due to MBR damaged problems.
 

What Is MBR

 
MBR, short for Master Boot Record, is a special type of boot sector at the very beginning of computer’s hard disk. The MBR holds the information on how the logical partitions, containing file systems, are organized on that storage medium. It also provides loader for the installed operating system.
 

Consequence of Damaged MBR

 
MBR is very important for hard disk. However, according to users’ feedback, we find some users encountered MBR corrupted problems.
 
Here is a true story from Microsoft Community:
 
Q: How do I fix MBR Error 3 in Window 10?
 
Over the past week I’ve been getting an MBR Error 3 on startup, I’m using an Alienware M17x and Windows 10.
Please advise what I need to do to resolve this error.
 
In addition to “MBR Error 3”, there are other errors that you may encounter if your MBR is damaged:
 Error loading operating system
 Invalid partition table
 Operating System not found (You may be interested in 5 Perfect Solutions to Getting Missing Operating System Back)
 
Why do these errors happen?
 
Due to some reasons such as boot files are deleted and the older startup record version is mistakenly installed, MBR may be damaged.
 
At this point, you need to rebuild MBR Windows 10.
 

How to Rebuild MBR Windows 10

 
When you encounter the above errors, don’t panic. In this post, I will introduce you two reliable MBR repair tools to rebuild MBR.
 

1. Use MiniTool Partition Wizard to Rebuild MBR

 
MiniTool Partition Wizard Pro, a specialized partition manager, helps you manage your disk effectively. It has some salient features – Convert GPT to MBR, Extend C Drive Partition, Recover Lost Partition, etc.
 
Part 1. Create Bootable Flash Drive or CD/DVD Using Bootable Media
 
Step 1. Download MiniTool Partition Wizard in another computer. And prepare a USB flash drive or CD/DVD disc then connect it to computer.
 
Step 2. Install MiniTool Partition Wizard and launch it to get its main interface. After that, click Bootable Media in the toolbar and then select WinPE-based media with MiniTool plug-in.

 
Step 3. You can create bootable UBS flash drive or CD/DVD. Here I choose to create bootable flash drive so I select USB Flash Disk. And click Yes to continue.
 
Note: It is recommended to back up all data on the USB drive via a professional tool like MiniTool ShadowMaker Free 2.0. Otherwise, the data on the USB disk will be destroyed.

 

Step 4. Wait patiently until the bootable USB drive has been built. When the process is completed, click Finish.

 

Part 2. Boot from MiniTool Bootable Flash Drive
 
Step 1. Connect MiniTool Bootable Flash Drive to your computer before starting it. Enter BIOS and do as Windows prompts.
 
Step 2. Set USB as the first Bootable Device and save configuration changes.
 
Step 3. Select Partition Wizard in the MiniTool PE Loader interface.

 

Part 3. Rebuild MBR with MiniTool Partition Wizard
 
Step 1. Select the disk that MBR is damaged and click Rebuild MBR in Check Disk or right click the disk needs rebuilding MBR and then choose this feature from the right-click menu.

 

Step 2. Click Apply button in the upper left corner to perform the change.

 

Alternatively, you can try to rebuild MBR with Windows built-in Command Prompt.
 
Want to know the details? Keep reading!
 

2. Rely on Fix MBR Command

 
The premise of using Command Prompt is that you have a Windows 10 installation DVD. If you don’t have, use the first way to help you rebuild MBR Windows 10.
 
Step 1. Boot your computer from installation DVD. Click Repair your computer.

 

Step 2. Choose Troubleshoot from the options.

 

Step 3. Click Command Prompt from Advanced options.

 

Step 4. When Command Prompt appears, type bootrec /fixmbr and press Enter. It is used to repair Corrupted MBR.
 
Step 5. Type bootrec /fixboot when the boot sector is damaged or when the boot sector is displaced by another non-standard code and press enter.
 
Step 6. Type bootrec /rebuildbcd and press enter.

 

Now rebuilding MBR Windows 10 is completed successfully depending on Command Prompt.
 
Two ways to rebuild MBR Windows 10 have been listed in this post. The first one uses third party software while the second one relies on Command Prompt. Obviously, the former is much easier than the latter. But everyone has their own views. Which way would you like to use to rebuild MBR Windows 10? Leave your comments to let me know.