If you encounter boot issues or errors related to the Boot Configuration Data (BCD) in Windows 11 or 10, you may need to manually rebuild the BCD. The BCD is a firmware-independent database that stores boot configuration parameters, and if it becomes corrupted or missing, it can prevent your system from booting properly.
In this article, we’ll guide you through the process of manually rebuilding the BCD using the Windows Recovery Environment and the Bootrec.exe tool. This method is particularly useful when you can’t boot into Windows normally and need to access the Recovery Environment from a bootable USB drive or DVD.
Before you begin, make sure you have the following:
To rebuild the BCD, you’ll need to access the Windows Recovery Environment. Here’s how:
Once you’re in the Command Prompt within the Recovery Environment, you can use the Bootrec.exe tool to rebuild the BCD. Follow these steps:
bootrec /rebuildbcd
attrib c:\boot\bcd -h -r -s
ren c:\boot\bcd bcd.old
bootrec /rebuildbcd
If the rebuild process doesn’t resolve the issue, you may need to try additional troubleshooting steps, such as repairing the Master Boot Record (MBR) or the File Allocation Table (FAT).
While manually rebuilding the BCD using the Windows Recovery Environment and Bootrec.exe is a reliable method, there are also alternative ways to address BCD-related issues:
Remember to always exercise caution when working with system files and partitions, and consider seeking professional assistance if you’re unsure about any of the steps involved.
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