Windows Vista no longer starts after you install an earlier version of the Windows operating system in a dual-boot configuration.â€œIf you install an earlier version of the Windows operating system on a Windows Vista-based computer, Windows Vista no longer starts. In this case, only the earlier version of the Windows operating system starts.â€œ
Why This Occur ?
These issues occur because earlier versions of the Windows operating system are incompatible with the new Windows Vista startup method. Windows Vista uses a new Boot Configuration Database (BCD) store. This store contains a boot menu and all the information about operating systems that are installed on the computer. Therefore, a Boot.ini file that is from an earlier version of the Windows operating system cannot be used to start Windows Vista.
How to Resolve the Issue ?
Use Bootsect.exe to restore the Windows Vista MBR and the boot code that transfers control to the Windows Boot Manager program.
To do this, type the following command at a command prompt:
Drive:\boot\Bootsect.exe /NT60 All
In this command, Drive is the drive where the Windows Vista installation media is located.
Note The boot folder for this step is on the DVD drive.
Please Leave Your Comments If You Experience Any Problem in Following the steps listed above.