Using BIOS Setup 5-11Boot MenuThe Boot menu sets the sequence of the devices to be searched for theoperating system.The bootable devices will be automatically detected during POST andshown here, allowing you to set the sequence that the BIOS uses to lookfor a boot device from which to load the operating system. A briefdescription of keyboard usage is listed next:Key Function↑ , ↓ Selects (highlight) a boot device.+, – Changes the boot sequence.1 to 4 Loads the default boot sequence.f or r Specifies if the boot device is fixed (f) or removable (r).X Moves the highlighted boot device from the “Boot priority order”list to the “Excluded from boot order” list, and vice versa.Shift + 1 Enables or disables a boot device.