To specify the drive you wish to boot from or to access the BIOS screen, repeatedly press the appropriate Function key immediately after turning on the computer.

The Function Key to use/press depends on your computer brand/model.

ASUS (most models)

  • ESC to enter boot menu (choose pmap for USB).
  • Delete or F2 to enter BIOS.

Dell (most models)

  • (see Lenovo above)

HP (most models)

  • F9 for boot.
  • ESC or F10 for BIOS

Lenovo (most models)

  • F12 for Boot menu.
  • F2 or F10 for BIOS.