How to Set a Drive Letter in a BIOS


Your computer's basic input/output system (BIOS) allows you to control various aspects of hardware functionality, including setting what drive your computer boots from. One instance when this is helpful is when you need your computer to refer to your CD-ROM drive instead of the hard drive when it boots. The drives on your computer are designated by letters (with your hard drive being the "C" drive).

  • Refer to your computer's manual to determine the function key that allows you to get into your BIOS. It is typically "F1" or "F2," but depends on model. (Consult your computer's manual to determine which key to press.)

  • Shut down your computer and restart your computer. Press the function (Fn) key before it boots into Windows. Your computer enters the BIOS.

  • Find the "Boot Device" or "Boot Order" functionality. Use your arrow keys to highlight your choices in BIOS, then press "Enter" to select the choice you want. Depending on your BIOS, press the key that changes the drive letter (this is clearly indicated on-screen). Go to the "Exit" choice and highlight it. Press "Enter."

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