Fix place of OVMF file (Arch linux updated)

vm.py

@@ -409,7 +409,7 @@ def start(ucred, vm: str, display: bool = None):
         r("VBoxManage", "startvm", vm, "--type=headless")
     elif backend == backend_qemu:
         if not os.path.exists(vm_dir(vm)+"OVMF.fd"):
-            r("cp", "/usr/share/edk2-ovmf/x64/OVMF.fd", vm_dir(vm)+"OVMF.fd")
+            r("cp", "/usr/share/edk2-ovmf/x64/OVMF.4m.fd", vm_dir(vm)+"OVMF.fd")
         with open(vm_dir(vm)+"run-qemu", "w") as f:
             cmd = S-f"""
                     qemu-system-x86_64 -enable-kvm \\