Here is the explanation of OVMF.fd: https://wiki.ubuntu.com/UEFI/OVMF When install anolis23.1 GA image by Qemu with OVMF.fd, installation failed with the following error: error: ../../grub-core/script/function.c:119:can't find command 'linuxefi' error: ../../grub-core/script/function.c:119:can't find command 'initrdefi' Press any key to continue ...... Installation script below, "-bios OVMF.fd" is the trouble. $QEMU_IMAGE \ -cpu host \ -m 48G \ -cdrom ${ISO_IMAGE} \ -bios OVMF.fd \ -accel kvm \ -smp 24 \ -drive file=${GUEST_IMAGE},if=virtio,format=qcow2 Anolis 23.0 did not have this issue.