Updated February 10, 2017 Reboot your computer and press the designated key (as listed in the start-up messages, which appear onscreen) to enter your BIOS. This key is typically either “Esc” or one of the “F” keys. Navigate to the “Boot” menu of your BIOS, using the arrow keys. Scroll to the option for “First Boot Device” by using the arrow keys. Press “Enter” to bring up a list of available options. Choose the option for your “HDD” (hard drive) and press “Enter” to confirm. Navigate to the option for your second, third and fourth boot devices. Set these options to “null” or blank. When dual booting, you will only want your computer looking to the hard drive for operating systems. Press “Esc” and press “Y” to save changes. Your computer will reboot and be prepared to dual boot.
