Hi folks, using this command sequence <code> export VIRSH_DEFAULT_CONNECT_URI=qemu:///system name=Testing kvmdir=/export/hdunkel/kvm hda=$kvmdir/$name/hda.qcow2 iso=/export/isos/debian-testing-amd64-netinst.iso mkdir -p $kvmdir/$name qemu-img create -f qcow2 $hda 32G virt-install --connect ${VIRSH_DEFAULT_CONNECT_URI} \ -n $name -r 1024 -vcpus=1 -f $hda -c $iso \ --network=bridge:br0 --vnc --accelerate -v \ --os-type=linux --os-variant=debianSqueeze </code> I get the famous "cdrom boot failure code 0003" error. The log file shows that libvirt generated this kvm command line: <code> LC_ALL=C \ PATH=/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin \ HOME=/root USER=root LOGNAME=root QEMU_AUDIO_DRV=none \ /usr/bin/kvm -S -M pc -m 1024 -smp 1 -name Testing \ -uuid 3a6b6b3f-84e6-6a21-a51a-2c61cf3914e2 \ -monitor unix:/var/lib/libvirt/qemu/Testing.monitor,server,nowait \ -no-reboot -boot d \ -drive file=/export/hdunkel/kvm/Testing/hda.qcow2,if=virtio,index=0 -drive file=/export/isos/debian-testing-amd64-netinst.iso,if=virtio,media=cdrom,index=1 \ -net nic,macaddr=52:54:00:3e:0b:26,vlan=0,model=virtio,name=virtio.0 \ -net tap,fd=18,vlan=0,name=tap.0 -serial pty -parallel none \ -usb -usbdevice tablet -vnc 127.0.0.1:0 -k en-us -vga cirrus </code> If I try this on the command line, then there is the same 0003 error. If I omit the if=virtio for the cdrom drive, then it boots the cd without 0003. Can you reproduce this? Is this a problem with libvirt or with the kvm module? Kernel is 2.6.31.5, i.e. kvm 0.88. libvirt is 0.7.2 Any helpful comments would be highly appreciated. Harri