I'm afraid I'm totally lost. Do you not just plug in a USB drive with a Linux ISO, hit the key combo for the boot menu, and boot off the USB? Maybe you need to

I'm afraid I'm totally lost. Do you not just plug in a USB drive with a Linux ISO, hit the key combo for the boot menu, and boot off the USB? Maybe you need to disable secure boot in the BIOS/UEFI, but that's about it, no?