How to Rebuild the BCD

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The Boot Configuration Data (BCD) store is a Windows Vista and Windows Server 2008 file that controls boot configuration and how the operating system starts when you turn on your computer. Occasionally, you may run into problems with BCD that require you to rebuild the file. This can be done in the Windows Recovery Environment.

Things You'll Need

  • Windows Vista installation disc
  • Back up your system before attempting to make any changes to the BCD.

  • Start Windows Recovery Environment. Place the Windows Vista installation disc in the DVD drive. When prompted to do so, press any key. Select options appropriate to your situation, including language, time, currency, keyboard or an input method and click \"Next.\" Click \"Repair your computer.\" Select the operating system you wish to repair and click \"Next.\"

  • Start \"Bootrec.exe.\" In the dialog box, click \"Command Prompt.\" Type \"bootrec.exe\" and press the Enter key.

  • Type the following lines in order, hitting the Enter key after each line:
    \"bcdedit /export C:\BCD_Backup\"
    \"c:\"
    \"cd boot\"
    \"attrib bcd -s -h -r\"
    \"ren c:\boot\bcd bcd.old\"
    \"bootrec /RebuildBcd\"
    \"y\"

  • Type \"exit\" followed by Enter and reboot the computer.

References

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