If you have installed Windows XP and then Vista on your system and after playing around with Vista, you have decided that you want to uninstall Vista. Now after removing Vista from your system, you might still see the option of Vista in Boot Menu. To fix this, follow the steps given below –
# Boot your computer in to Windows XP.
# Ensure you have the Vista DVD image emulated or in the DVD drive.
# Go to “Start” and “Run”. Type in “e:\boot\bootsect.exe /nt52 ALL /force” (without quotes, and replacing e: with the drive letter of your Vista DVD).
# Restart the computer, and you will notice the boot selection menu is gone.
# Format the partition/drive where you had Vista installed.
# Remove two files (Boot.BAK & Bootsect.BAK) on your XP drive’s root folder (C:), these were backup files of your previous bootloader, now no longer useful.
# Optional: Restart to ensure it still works