Tip: The Command Prompt will not start immediately. Select the Command Prompt button to launch it. In Windows 10/8, select Troubleshoot> Advanced options. ![]() Open Advanced Startup Options, if using Windows 10 or Windows 8 and System Recovery Options, if using Windows 7 or Windows Vista.Ģ. Rebuilding BCD in Windows takes only about 15 minutes:ġ. How to rebuild BCD in Windows 10, 8, 7 or Vista Similar problems can exist in Windows XP, but because the boot configuration information is stored in the boot.ini file rather than the BCD, fixing XP with boot data is a completely different process. Note : These instructions apply to Windows 10, Windows 8, Windows 7 and Windows Vista. Just follow the instructions exactly and everything will be okay. There are a number of commands to run and lots of output on the screen, but rebuilding BCD is an extremely simple process. The simplest solution to the BCD problem is that just rebuild it, you can automatically do it with the bootrec command (which will be explained in full below).ĭo not worry if this guide is too long. ![]() If the BCD (boot configuration data) store of Windows is missing, corrupted or not properly configured, Windows will not be able to start and you will see the "BOOTMGR is Missing" error or a similar error message during the boot process.
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