Repair the corrupted Vista Bootloader in a dual-boot configuration

Once you install any older version of Windows the Windows Vista no longer starts and only the older version starts.This happens because older versions of the Windows OS are incompatible with the new Windows Vista startup method. Windows Vista uses a new Boot Configuration Database (BCD).

Now follow these steps to solve that problem :


Use Bootsect.exe to restore the Windows Vista MBR and the boot code that transfers control to the Windows Boot Manager program.

This can be done by typing the following command at a command prompt:

Drive:\boot\Bootsect.exe /NT60 All

Here Drive is the drive where the Windows Vista installation media is located.

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