How to setup boot manager?
In fact, Windows provides boot manager to manage multi operating systems and it helps you boot from either. Windows boot manager is easy to use. If you installed Windows XP before and you want to install Windows 7, you just need to install Windows 7 to another partition normally, after that, Windows will create a boot manager automatically. After installing Windows 7 and reboot, the boot manager will let you to choose booting from which operating system.