MBR Is Corrupted
As you know, MBR is the master boot record on the hard drive in your computer. It is always created in your first partition, and it is very important for your hard drive. MBR contains the executable codes for the computer boot, which always locates in the first sector of your disk. If your disk MBR gets corrupted, the operating system will fail to boot.
Usually, when system is unable to boot, you can get some error messages or information, such as “A Disk Read Error Occurred”, “Operating System not found” or “missing operating system”. In these cases, you should consider that the master boot record is damaged. Why does MBR get corrupted? Generally speaking, there are some reasons, including virus infection, mistaken operation or sudden power failure.
When MBR damage happens, what should you do? In fact, it is very easy to repair corrupted MBR rather than reinstalling Windows OS, so just try the following ways.
How to Fix MBR
Run Bootrec
MiniTool Partition Wizard is an easy-to-use partition manager software. Rebuild MBR, Change Cluster Size, Set Partition as Logical/Primary, Set Active, Convert. Rebuild MBR Start MiniTool Partition Wizard, select a physical disk listed in the main window, select from top menu Disk - Rebuild MBR If MBR (Master Boot Record) of disk is damaged, system cannot boot. This feature will rewrite the Master Boot Record of the selected disk without destroying the disk partitiontable. How to Rebuild Windows MBR - MiniTool Partition Wizard -FREE software - YouTube FREE download page; Partition Wizard, select a physical disk listed in the main.
When it comes to MBR repair, some of you may refer to Windows built-in tool that is called Command Prompt. In order to do a boot sector repair, the first thing is that you should prepare a Windows installation disc, and then connect to your computer to start OS from this disc. Then start a restoration.
1. Launch Command Prompt. The way to open this tool is different, so just do according to a real situation.
2. Then type the following commands:
For Windows XP, type fixmbr, fixboot commands one by one.
For Windows 7/8/10, type Bootrec /fixmbr, Bootrec /fixboot to fix MBR and boot sector.
Use MiniTool Partition Wizard Bootable CD
In addition, there is another way to repair corrupted MBR. To do this work, you can ask a third-party tool for help. Here MiniTool Partition Wizard Bootable CD will be your good choice. As a reliable and professional MBR repair tool, it enables you to manage your disks and partitions when the operating system fails to boot or when there is no operating system. So in this post, the Bootable CD is available to do a repair. In order to fix the MBR and boot sector effectively, you need to download MiniTool Partition Wizard Bootable CD and then burn the .iso file to a CD/DVD or USB flash drive. Then do a repair as follows.
Step 1: Connect the flash drive or disc to your computer, then modify the boot order in BIOS to boot from this device.
Step 2: After your system boot, you will enter into the main interface of MiniTool Partition Wizard. Here right click the target hard disk to select “Rebuild MBR”. Also it is ok to click this feature from “Operations” menu.
Step 3: Then click “Apply” to make this change effective to repair corrupted MBR.
Like that, your master boot record and boot sector will be fixed. Then the computer can boot normally. In addition to rebuilding MRR, MiniTool Partition Wizard Bootable CD can do other disk and partition operations when system can’t boot, such as partition recovery, copy disk, extend/resize partition and so on. Hope this tool is useful to you.
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.
Minitool Partition Wizard License Key
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.
Minitool Partition Wizard Restore Mbr
Step 2. Choose Troubleshoot from the options.
Step 3. Click Command Prompt from Advanced options.
Minitool Partition Wizard 10 Download
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.
Minitool Partition Wizard Rebuild Mbr Gpt
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.