How to Rebuild Boot Configuration Data File in Windows 10

Rebuild BCD in Windows 10

1. Boot your computer into Advanced Recovery Mode.
2. Launch Command Prompt available under Advanced Options.
3. To rebuild the BCD or Boot Configuration Data file use the command – bootrec /rebuildbcd.
4. It will scan for other operating systems and let you select the OS's you want to add to BCD.

1. How do I fix boot configuration data file?
2. How do I rebuild BCD in Windows 10?
3. How do I rebuild a BCD file?
4. How do I rebuild Windows Boot Manager?
5. Where is boot configuration data stored?
6. What are the boot files in Windows 10?
7. How do I fix Windows boot manager without disk?
8. How do I repair Windows 10 with command prompt?
9. How do I get rid of BCD?
10. Can I run Bootrec from within Windows?
11. Where is the BCD file in Windows 10?
12. How do I fix Bootrec Fixboot access is denied?

How do I fix boot configuration data file?

How to Fix a 'Boot Configuration Data File is Missing' Error in Windows 10

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."

How do I rebuild BCD in Windows 10?

How to Rebuild the BCD in Windows 10, 8, 7, or Vista

1. On Windows 10 or Windows 8: Start Advanced Startup Options. ...
2. In Windows 10/8, select Troubleshoot > Advanced options.
3. Select the Command Prompt button to start it. ...
4. At the prompt, type the bootrec command as shown below, and then press Enter: bootrec /rebuildbcd.

How do I rebuild a BCD file?

Fix #4: Rebuild the BCD

1. Insert the original installation DVD or USB Drive. ...
2. Restart your computer.
3. Boot from the disc/USB.
4. At the Install screen, click Repair your computer or press R.
5. Click Troubleshoot.
6. Click Command Prompt.
7. Type these commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.

How do I rebuild Windows Boot Manager?

The instructions are:

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.

Where is boot configuration data stored?

Boot Configuration Data is stored in a data file that has the same format as Windows Registry hives and is eventually mounted at registry key [HKEY_LOCAL_MACHINE\BCD00000] (with restricted permissions). For UEFI boot, the file is located at /EFI/Microsoft/Boot/BCD on the EFI System Partition.

What are the boot files in Windows 10?

Boot Loading Architecture

1. Windows Boot Manager (Bootmgr.exe)
2. Windows operating system loader (Winload.exe)
3. Windows resume loader (Winresume.exe)

How do I fix Windows boot manager without disk?

How to fix Windows MBR without installation disk?

1. 'Do it. Try it. ...
2. Unplug your external USB drive. A lot of users have reported that disconnecting your portable USB drive is an easy and efficient fix for MBR errors. ...
3. Employ Windows Troubleshoot. ...
4. Use Bootrec. ...
5. Make use of Windows Defender. ...
6. Use a third-party antivirus. ...
7. Auslogics Anti-Malware.

How do I repair Windows 10 with command prompt?

How To Repair and Restore Windows 10

1. Click Startup Repair.
2. Click System Restore.
3. Select your username.
4. Type "cmd" into the main search box.
5. Right click on Command Prompt and select Run as Administrator.
6. Type sfc /scannow at command prompt and hit Enter.
7. Click on the download link at the bottom of your screen.
8. Click Accept.

How do I get rid of BCD?

To Delete Boot Menu Entry in Windows 10,

1. Open an elevated command prompt.
2. Type or copy-paste the following command, and hit the Enter key: bcdedit .
3. In the output, find the identifier line for the entry you want to delete. ...
4. Issue the following command to delete it: bcdedit /delete identifier .

Can I run Bootrec from within Windows?

bootrec is not available from within running Windows. It is part of recovery which is based on PE, a slimmed Windows OS.

Where is the BCD file in Windows 10?

Where is the BCD file in Windows 10? It is stored in a file in folder “\Boot”. The full path to this file is “[active partition]\Boot\BCD”. For UEFI boot, the BCD file is located at /EFI/Microsoft/Boot/BCD on the EFI System Partition.

How do I fix Bootrec Fixboot access is denied?

Bootrec Fixboot Access Is Denied FAQ

1. Reboot the computer.
2. Press F8 as the Windows logo appears.
3. Select Repair Your Computer.
4. Select Command Prompt from the System Recovery Options menu.
5. When you are in the Command Prompt, execute bootrec /rebuildbcd.