From the menu choose the usb drive and press enter. Boot from usb.
Just follow the steps below to enable asus bios boot from usb or cd drive.
Boot from usb asus rog. Press and hold the f2 button then click the power button. Boot the system from usb flash drive cd rom in bios legacy mode. Then your computer can boot from the usb.
Enter the bios configuration of the system. 1 enter bios select boot select usb drive cd rom under the boot override options 2 enter bios select boot change the boot device priority so that your usb drive cd rom is the first boot device. Before boot up the notebook insert the usb disk or the cd rom drive.
Asus laptop boot menu bios settings. After that connect the usb drive to the asus computer and power on the computer. After entering the bios configuration press hotkey f8 or use the cursor to click boot menu that the screen displayed.
Select usb flash drive cd rom in boot menu that you want to use then press enter key to boot the system from usb flash drive cd rom. Then press the asus boot menu key to open asus laptop boot menu. After the computer restarts please try step 1 and step 2 again to select usb flash cd rom in boot menu that you want to use then the system will boot from it.
Go to save exit screen select usb flash drive cd rom in boot override that you want to use then press enter key to boot the system from usb flash drive cd rom. Save and exit bios to keep this setting but you may want to change it back later to avoid booting to external devices disks accidentally when they are plugged in installed. Change boot order to boot from usb in asus rog strix scar ii plug in your usb drive turn the zenbook on enter uefi bios through pressing esc or f2 in the boot tab disable fastboot press f10 to save lots of exit immediately press esc or f2 once more in boot tab your usb drive ought to be.
In legacy mode you only can select items by using arrow keys and enter key.