How to use qemu with UEFI on Ubuntu In order to use QEMU with UEFI on Ubuntu first install OVMF: sudo apt -y install ovmf After that, use the -bios /usr/share/ovmf/OVMF.fd with QEMU, for example: sudo qemu-system-x86_64 -bios /usr/share/ovmf/OVMF.fd -hda /dev/sdb -m 1024