It will reboot once or twice, but eventually you'll be greeted with a multi-boot menu that allows you to select which OS you want to load (Windows 8, Windows 7, or any other OSes that're installed).

This tip should work for Windows 7 or Vista, but if you haven't upgraded yet, you can still clean up your Windows XP boot menu easily.

If you just want to analyze what occurs during the boot process on a Windows 7 machine, Jack Wallen says msconfig is the perfect tool for the job.

On Windows 10, you have four different ways to change the boot manager timeout for a dual-boot system, and in this guide, I'll teach you how.