Using Windows Boot Manager
Now that your system can boot to one or more operating systems other than Windows 8, you need to know how to control your OSs. You do this using the Windows Boot Manager, which is a menu of the operating systems installed on your PC.
By default, Windows Boot Manager appears automatically when you start your PC. However, you can also invoke Windows Boot Manager from within Windows 8 itself by following these steps:
1. Press Windows Logo+I to open the Settings pane and then click Change PC Settings.
2. Click the General tab.
3. Under the Advanced Startup heading, click Restart Now. The Choose an Option screen appears.
4. Click Use Another Operating System. The Choose an Operating System screen appears, which is the Windows ...