Computer Tutorial

Changing the startup disk (also known as the boot disk) of a computer requires entering the computer's BIOS. The motherboard BIOS controls the communication initialization of all hardware devices connected to the computer. This includes keeping a list of the order the hard drives are booted up. Changing the start of this requires changing the order in which these drives are listed in the BIOS.

1. Step 1
   Restart the computer.
2. Step 2
   Press the indicated key to enter the BIOS. A message appears at the bottom of the screen during the initial POST (power-on self-test) sequence indicating the correct key that needs to be pressed in order to enter the BIOS.
3. Step 3
   Use the right arrow key to navigate to the boot menu.
4. Step 4
   Press the down arrow key to navigate to the sequence list.
5. Step 5
   Press the "+" or "-" keys to change the position of items within the sequence list. Generally, pressing the minus key on an item lowers its position on the list while pressing the plus key moves an item higher on the list. The item at the top of the list is the first disk the BIOS will attempt to boot from