Rebuild BCD Windows
- On Windows 10 or Windows 8: Start Advanced Startup Options.
- In Windows 10/8, select Troubleshoot > Advanced options.
- Select the Command Prompt button to start it.
- At the prompt, type the bootrec command as shown below, and then press Enter: bootrec /rebuildbcd. ...
- You should see one of the following messages at the command line.
Full Answer
How to rebuild boot BCD?
How to rebuild the BCD manually? To rebuild the BCD manually in Windows 10: With the “Advanced Recovery Mode,” boot your system. Under the “Advanced Options,” open the command prompt. Use the code – bootrec/rebuildbcd to rebuild BCD. Once the scanning is complete, choose the OS to be added to the BCD.
How to rebuild BCD?
- Enter MiniTool Recovery Environment.
- Select the system disk and right-click it.
- Choose the Rebuild MBR feature from the context menu to fix MBR Windows 10/8.1/8/7.
Can you fix a BCD?
The easiest solution to a BCD issue is to simply rebuild it, which you can do automatically with the bootrec command. There are several commands to run and lots of output on the screen, but rebuilding the BCD is a very straightforward process.
How to rebuild the BCD in Windows?
Solutions For BCD File Missing In Windows 10
- Solution 1. Repair Using Automatic Repair Option. ...
- Solution 2: Make The Correct Partition Active. Sometimes the BCD missing Windows 10 error may occur in case you did not set the other partition as the active one.
- Solution 3: Rebuild BCD With Bootrec.Exe Tool. To rebuild BCD Windows 10 you may use Bootrec.exe tool available for Recovery. ...
- Solution 4. ...
How do I manually rebuild my BCD?
To do this, please follow the steps below.Press F8 during your computer's startup (before starting Windows). ... Select the operating system you want to repair, click next.In the system recovery options, click "Command Prompt".Type at the prompt, Bootrec / RebuildBcd, and then press enter.
How do I fix BCD file?
Rebuild BCD in Windows 11/10Boot your computer into Advanced Recovery Mode.Launch Command Prompt available under Advanced Options.To rebuild the BCD or Boot Configuration Data file use the command – bootrec /rebuildbcd.It will scan for other operating systems and let you select the OS's you want to add to BCD.
Is rebuilding BCD safe?
Rebuilding the BCD doesn't affect your personal data or settings in any way, so you can continue to use your computer as normal.
How does BCD get corrupted?
Why does the corrupted BCD error occur? This error can happen for various reasons, but it mostly points towards an installation problem (where you've probably deleted the BCD) or the possible failure of an HDD drive. If the latter is the problem, rebuilding BCD won't do you too much.
How do I fix boot BCD startup errors in Windows?
Step by Step guideInsert the installation media into the PC. ... Find out how to access the BIOS/UEFI of the machine. ... Change the boot order so that the computer boots from the USB or DVD drive before it boots from internal hard drives.Click next on the first screen of setup. ... Select Repair your computer on the next screen.More items...•
What causes boot BCD error?
One of the most common causes of this error is the BCD that became missing or corrupt. That could happen because of disk write errors, power outages, boot sector viruses, or errors made while configuring the BCD manually.
What does Bootrec FixBoot do?
/FixBoot. This option writes a new boot sector to the system partition by using a boot sector that's compatible with Windows Vista or Windows 7. Use this option if one of the following conditions is true: The boot sector was replaced with a nonstandard Windows Vista or Windows 7 boot sector.
Does FixBoot erase data?
If you use the "fixmbr" command from the Recovery Console there should be no danger of data loss. The only circumstances under which that might arise would be if the command altered the Partition Table - it will only do that if the Partition Table is corrupt, and then it will warn you before making any changes.
What is Bootrec?
bootrec.exe is the utility that is used to update the master boot record code, partition bootsector code, and the BCD (boot configuration data). It's most-commonly used to correct boot problems on Windows Vista and later versions of Windows.
Can you fix Bootmgr without CD?
To fix BOOTMGR is missing in Windows 7 without CD, you can create a bootable USB from ISO and then boot the PC from the USB drive to enter the Windows Recovery Environment. Click the Repair your computer option after selecting your language, time and keyboard method.
How do I fix the MBR in Windows 10?
Click the Troubleshoot button. Click the Advanced options button. Click the Command Prompt button. You will now enter into the Command Prompt environment, which will allow you to launch the Bootrec.exe tool to repair the Master Boot Record on your Windows 10 PC.
Where is boot BCD located?
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 the MBR in Windows 10?
Fix the MBR in Windows 10Boot from the original installation DVD (or the recovery USB)At the Welcome screen, click Repair your computer.Choose Troubleshoot.Choose Command Prompt.When the Command Prompt loads, type the following commands: bootrec /FixMbr bootrec /FixBoot bootrec /ScanOs bootrec /RebuildBcd.More items...
How do I fix failure when attempting to copy boot files?
Fix the error using a free GUI MBR repair tool You can also fix the BCDboot failure when attempting to copy boot files via AOMEI Partition Assistant. It is a free and professional disk manager. The Rebuild MBR feature allows you to repair corrupted MBR to the computer without destroying any data.
How do I view a BCD file?
The BCD registry file is located in the \Boot\Bcd directory of the active partition. EFI–based operating systems. The BCD registry file is located on the EFI system partition.
What is BCD error?
The Boot Configuration Dara for your PC is missing or contains errors. File: \Boot\BCD. Error code: 0xc000014c. You'll need to use recovery tools. If you don't have any installation media (like a disc or USB device), contact your PC administrator or PC/Device manufacturer.
How to start a recovery screen on Windows 7?
On Windows 7 or Windows Vista: Start System Recovery Options . In Windows 10/8, select Troubleshoot > Advanced options . Select the Command Prompt button to start it. Command Prompt won't start immediately. Your computer will show a "Preparing" screen for a short time while it readies the computer.
Can you delete a BCD file?
You could delete the BCD file entirely since you're about to create a new one. However, renaming the existing BCD accomplishes the same thing since it's now unavailable to Windows, plus provides you with another layer of backup, in addition to the export you did in Step 5, if you decide to undo your actions.
The Boot Configuration Data File is Missing in Windows 10 or 11
If the BCD file is missing or corrupted, if you removed/formatted a separate disk partition with the System Reserved label (and 500 MB in size) or a special OEM recovery partition, a user is likely to see the following message when trying to boot Windows:
How to Automatically Repair Windows Bootloader?
If this error appears, first of all, try to fix the problem with booting the OS using the Startup Repair mode that can be started from the Windows Recovery Environment (Windows RE).
Identifying Disk Partition Layout and Drive Letters
Very important. All instructions given below are suitable for standard BIOS computers (or booting in UEFI legacy mode) with the MBR partition table. On computers with UEFI firmware, you need to use the following guides to repair the EFI bootloader on Windows 10 or to restore deleted EFI partition.
How to Recreate a Windows Boot Configuration (BCD) from Scratch?
Next, use the using BCDedit command to create a new Boot Configuration Data file (it is supposed, you don’t have the BCD backup file ).
Why is my BCD deleted?
That could happen because of disk write errors, power outages, boot sector viruses, or errors made while configuring the BCD manually.
How to fix boot BCD error 0xc00000f?
To fix the boot BCD error 0xc00000f or the similar errors in this way, you need to prepare an USB flash drive and a functioned Windows OS based PC. The USB drive is used to make bootable media and the PC is where you do the making.
How to repair Windows 7?
In Windows 7, go Repair your computer > Next > System Recovery Options > Command Prompt. In Windows 10, go Repair your computer > Advanced options > Command Prompt. Alternatively, you can choose Start-up Repair at this step and let it repair automatically. In Windows XP, you need to boot from Windows Recovery Console.
The almighty bcdboot command
The system BCD is a system protected file and can be accessed only with elevated administrative rights (for reading and for writing).
Additional BCD repair steps
If there are problems/errors when executing bcdboot command (or when using Visual BCD Editor's or Dual-boot Repair's "Repair BCD" interface) then you have to remove following file:
Errors fixed with bcdboot command
1) File: \Boot\BCD Status: 0xc000000f Info: An error occurred while attempting to read the boot configuration data. 2) File: \Boot\BCD Status: 0xc0000001 Info: An error occurred while attempting to read the boot configuration data. 3) File: \Boot\BCD Status: 0xc000014c Info: An error occurred while attempting to read the boot configuration data. 4) File: \Boot\BCD Status: 0xc0000098 Info: The Windows Boot Configuration file does not contain a valid OS entry..