I am trying to install Linux Mint 20.3 from USB stick on my new Asus PN52. USB stick was made with UNetbootin on Linux Mint 19. USB drive and internal NVMe disk - operating system destination - are visible.
Once I hit F8 and enter boot menu - it is empty:
There are no options in Boot menu in Aptio to add drives to boot sequence:
Secure boot option is disabled. Fast boot option is disabled.
How to force Aptio to boot from USB?
dd
to write the iso file directly to the USB device, rather than "unetbootn". There may be other options in BIOS to enable/disable boot devices. (Have you ever booted from USB before?) and you may have to try another USB port as BIOS may only support USB1/2 and you may be plugged into a USB3...