To do this, go to the "Boot" tab, select the "Fast Boot" line and press Enter to change its value. If the desired boot option doesn't appear or you want to boot from an old Live CD, you will need to configure this BIOS to work like the old BIOS and not with UEFI firmware. Now, you will see this USB key in the "Boot" tab of the BIOS. Select the USB key you want to boot to and press Enter. Here, you will see all your currently plugged USB keys appear. In this case, select the "UEFI USB Hard Disk Drive BBS Priorities" line and press Enter. If you have more than one USB key currently plugged into your computer, you may not be able to see it. So, we select the "USB Hard Disk:UEFI: TOSHIBA TransMemory PMAP" line and we press Enter to validate. Then, select the device you want to boot to first.
To do this, select the "Boot Option #1" line and press Enter to change its value.