I have installed Mint as a dual OS with Windows XP on my computer. However, when starting up, it allows for perhaps three seconds for user to select which OS to boot up, and frequently I'm too slow and it will automatically boot into Mint. How can I make it stop at the selection menu and not continue with the startup until I select the OS I want? If this is not possible, can I lengthen the wait time to 10 seconds for me to select the OS of my choice? Thanks in advance for any tips.