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Windows 10 Windows 8 Windows 8.1

How to Rebuild BCD Windows 10 |8.1

This is a step by step tutorial or a beginner’s guide to How to rebuild BCD (Boot Configuration DATA) and rebuild MBR (Master Boot Record) in Windows 10 & Windows 8 | 8.1.

Rebuilding BCD | Boot configuration data | MBR

To check & rebuild the Windows BCD:

  • If you are able to access lock screen on Windows, Press & keep holding the shift key & click on Restart to open Windows Recovery Environment (WinRE)
  • If not,
  • Insert the original Windows DVD/USB and boot from it
  • You can also use Windows Recovery Media
  • Select your Language & keyboard options
  • Click Next
  • Click on Repair your computer

windows10_repair_boot

  • Click Troubleshoot
  • Click on Advanced Options
  • Click on Command Prompt

command_prompt_diagnostics_menu_windows10

  • Now,
  • Type bootrec /fixmbr
  • Press Enter
  • Then,
  • Type bootrec /fixboot
  • Press Enter
  • Then,
  • Type bootrec /rebuildbcd
  • Press Enter
  • Now, Type Exit

bootrec

  • Restart your computer
Categories
Windows 7

Fix: Stop Error : Blue screen : BSOD : unmountable_boot_volume 0x000000ed in Windows 7

After reading this guide you will be able to fix an issue with your Windows 7 computer, where you get a Blue Screen error or BSOD / Stop error at the time of booting.

The error code would look be something like this :

STOP 0x000000ED (0x00000, xxxxxxx, xxxxxxx) UNMOUNTABLE_BOOT_VOLUME

What to know about BSOD, STOP errors:

Click here

 

What to do when you cannot start Windows at all

 

Click here

Fix:

Method 1:

  • Insert your Windows 7 Repair Disc or Installation Disk into the DVD Drive
  • If you do not have a system repair dis, Windows Installation disk will also do
  • If you do not know how to boot from a bootable disk
    • Press Del or F10 or any other key that enters your BIOS
    • Find the boot options
    • Set your DVD drive as the first boot device
    • Save & Exit
  • After booting from the Windows Installation Disc or Repair Disc
  • Click on Repair
  • Select Command prompt
  • type chkdsk drive: /f
  • type chkdsk drive: /r  ( replace drive with your drive letter, example: C: , D: )
  • Let Windows finish checking and repairing your disk.

Refer Screenshot

startup_repair

 

Method 2

  • You can also use system restore from the above menu to restore your computer to an earlier time

Method 3 : Rebuild your Boot Configuration Data (BCD)

  • Boot from the Windows DVD / USB
  • Click on Repair Your Computer
  • Select your Windows Installation
  • Click Next
  • Click on Command prompt or press Shift + F10
  • type bootrec /rebuildbcd
  • You will get a message saying ” The operation completed successfully”
  • Restart your computer

Method 4

  • If you are a tech savvy person & opening your computer is a part of the fun
  • Open your computer,
  • Take out your hard disk drive
  • Attach it to a external enclosure or plug it into another computer running Windows
  • Go to Computer
  • Check if the drive is shown here
  • Right Click the drive
  • Click on properties
  • Click on Tools
  • Click on check now
  • Check the checkbox that says “ Automatically fix file system errors”
  • Run the scan
  • Plug your hard disk back into the your computer
  • Check if the problem is solved.