How to restore MBR from Windows 7 and Windows 8

Master boot record fix for Windows 7 and Windows 8

On previous Windows version it was frequent to see it fail to boot due to a master boot record failure (MBR).  On earliest versions, such as Windows 7 and Windows 8, it is also possible but less frequent.  You can recover from such problems in just a few minutes if you know what to do and how to do it.  Here’s a guide on how to restore MBR from Windows 7 which also work for Windows 8 and 8.1.

What you need ?

– Windows Vista, 7 or 8 boot disc.

 

How to restore MBR from Windows 7

1. Boot your computer from Windows 7 boot disc (don’t forget to press a key when it ask you for it)

Press any key to boot from disk

2. On windows installation screen, keep default options and click ‘next’.

Windows 7 Installation Screen

3. On the next screen, do NOT click on ‘install now’.  Instead, you must click on ‘Repair your computer’ on the bottom.

Windows 7 Installation Repair your Computer

4. Windows will detect current installation on hard drive and will prompt you to select it to use with recovery tools.  Click ‘next’.

Windows 7 System Recovery Options

5. On the next screen you have choice to select many options.  Select ‘Command Prompt’.

Windows 7 Recovery Options

6. In command prompt, you need to find what letter has your DVD/CD drive.  We will use the following commands to do so :

diskpart

select disk 0

list volume

You will need to notice drive letter under column ‘LTR‘ next to DVD-ROM.  In my case drive letter is E

Command line disk part

7.  Next step is to browse to ‘boot’ directory of boot disk.  To do so input the following commands (replace drive letter with accurate one) :

e:

cd boot

dir bootsect.exe  (we make sure bootsect.exe is present on disk, if not use another boot disk)

Verify bootsect.exe file

8. Now we can fix master boot record (MBR) using bootsect executable file.  Input the following command :

bootsect.exe /nt60 SYS /mbr

Bootsect fix mbr

9. Master boot record is now fixed, you can reboot your computer.

 

Alternative or more way to fix MBR

1. In command prompt at step #8, input the following command :

Bootrec.exe

Bootrec.exe parameters

2. You can fix master boot record and boot sector by applying the following parameters to the bootrec command : /fixmbr and /fixboot

bootrec.exe /fixmbr

bootrec.exe /fixboot

Bootrec.exe fixmbr fixboot

3. You can then reboot your computer and MBR will be recovered.

shutdown and restart buttons

Congratulation, you have now know how to restore MBR from Windows 7 and Windows 8.

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