I have come across with an installation problem and I want to use the usb boot option to rescue my machine. I formatted the usb to be fat32 and execute the command dd bs=4M if=/path/to/archlinux.iso of=/dev/sdx status=progress && sync. Everything went well and as far as I know, if I boot using UEFI this should be the steps to follow.
However, on booting I have:
Arch Linux archiso x86_64 UEFI CD UEFI Shell x86_64_v1 UEFI Shell x86_64_v2 EFI Default Loader Reboot Into Firmware Interface I think I should select option number 1, but this reboots the machine and I end up again in the same menu. I know there should be everything fine with the EFI stuff, because that's how I installed archlinux. I checked the bios and I also see that it is nothing in secure mode (usb).
UEFI with Legacy OPROM; Secure boot: OFF