Hi All, Upstream : virt-install and virt-manager fails to install the guest with the error "qemu: could not load PC BIOS 'bios.bin'" Kernel, Qemu, Libvirt, Virt-Manager is built from the source (git). kernel version : 3.9.0+ qemu version : QEMU emulator version 1.5.0 libvirt version : 1.0.5 virt-install : 0.600.3 Guest installation fails for Standard PC machine type. virt-install --name vm_name --cdrom <iso path> --disk <disk path > --ram 2000 --machine pc Starting install... ERROR internal error process exited while connecting to monitor: char device redirected to /dev/pts/1 qemu: could not load PC BIOS 'bios.bin' Domain installation does not appear to have been successful. If it was, you can restart your domain by running: virsh --connect qemu:///system start win7 otherwise, please restart your installation. Where as the qemu installation succeeds with the same machine type (standard pc) qemu-system-x86_64 -cdrom <iso_path> -hda <disk_path> -boot d -m 1000 -machine pc Below is the list of supported machine type: qemu-system-x86_64 -M ? Supported machines are: none empty machine pc Standard PC (i440FX + PIIX, 1996) (alias of pc-i440fx-1.5) pc-i440fx-1.5 Standard PC (i440FX + PIIX, 1996) (default) pc-i440fx-1.4 Standard PC (i440FX + PIIX, 1996) pc-1.3 Standard PC pc-1.2 Standard PC pc-1.1 Standard PC pc-1.0 Standard PC pc-0.15 Standard PC pc-0.14 Standard PC pc-0.13 Standard PC pc-0.12 Standard PC pc-0.11 Standard PC, qemu 0.11 pc-0.10 Standard PC, qemu 0.10 isapc ISA-only PC q35 Standard PC (Q35 + ICH9, 2009) (alias of pc-q35-1.5) pc-q35-1.5 Standard PC (Q35 + ICH9, 2009) pc-q35-1.4 Standard PC (Q35 + ICH9, 2009) Installation fails (virt-install) for all machine types expect pc-i440fx-1.5 and pc-i440fx-1.4. Thanks, Chandrashekar