What is Rebuild BCD?

What is Rebuild BCD?

If the Windows boot configuration data (BCD) store is missing, corrupted or improperly configured, you have to fix Windows startup issues. The easiest solution to a BCD issue is to simply rebuild it, which you can do automatically with the bootrec command.

How do I fix boot and rebuild BCD in CMD?

To do this, please follow the steps below.

  1. Press F8 during your computer’s startup (before starting Windows).
  2. Select the operating system you want to repair, click next.
  3. In the system recovery options, click “Command Prompt”.
  4. Type at the prompt, Bootrec / RebuildBcd, and then press enter.

How do I restore my bootloader?

Automatic Windows Bootloader Recovery

  1. Try to boot your device from the recovery disc or installation Windows 10 media;
  2. On the installation screen, click the Restore System;
  3. Then select Troubleshoot -> Startup Repair and select the OS whose bootloader you want to try to recover;

How do I turn on auto repair?

How to enable automatic repair on Windows 10

  1. Open Start.
  2. Search for Command Prompt, right-click the top result, and select Run as administrator.
  3. Type the following command and press Enter:
  4. Make note of the reoveryenabled and identifier values under the “Windows Boot Loader” section.

How do I fix a missing boot BCD?

Next, follow these steps:

  1. Insert your installation media into the computer.
  2. Boot to the media.
  3. Click Next on the Windows Setup menu.
  4. Click “Repair your computer.”
  5. Choose Troubleshoot.
  6. Select “Advanced options.”
  7. Pick “Command Prompt.”
  8. Type Bootrec /fixmbr and press the enter key.

How do I fix missing BCD?

How do I restore my master boot record?

Fix the MBR in Windows 10

  1. Boot from the original installation DVD (or the recovery USB)
  2. At the Welcome screen, click Repair your computer.
  3. Choose Troubleshoot.
  4. Choose Command Prompt.
  5. When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.

Does System Restore fix boot problems?

System Restore is a utility that allows you to return to a previous Restore Point when your computer was working normally. It can remedy boot problems caused by a change you made rather than a hardware failure.

How long does it take to rebuild the BCD in Windows?

Rebuilding the BCD in Windows should only take around 15 minutes: Start Advanced Startup Options if you’re using Windows 10 or Windows 8. Start System Recovery Options if you’re using Windows 7 or Windows Vista.

How to boot to Windows 10/8/7/Vista after BCD repair?

Start Windows repair CD/USB and go to command prompt. C: drive is usually mapped to active partition. You can check if “\\Boot” folder is present on c: drive with “dir” command. Usually you should be able to boot to Windows 10/8/7/Vista after the BCD was fixed. For a successful boot, at least to boot menu, following items are needed;

How do I restore a BCD backup from a Windows installation?

Since the BCD store exists and lists a Windows installation, you’ll first have to remove it manually and then try to rebuild it again. At the prompt, execute the bcdedit command as shown and then press Enter: bcdedit /export c:bcdbackup.

Where is the system Boot Configuration Data (BCD) in Windows 7/8/10?

See how to create or obtain a Windows 7/8/10 installation/repair CD/DVD/USB. In Windows Vista, Windows 7, Windows 8/8.1 and Windows 10 the System Boot Configuration Data (BCD) is stored in a file in folder “\\Boot”. The full path to this file is “[active partition]\\Boot\\BCD”.