Hi, I installed a brand new system with RHEL5. In that system I installed virt-manager, virtinst, libvirt, libvirt-python, kvm and qemu latest. Build via src.rpm. Now I tried to install a RHEL5 guest with the following configurations: <a href="http://img404.imageshack.us/img404/5869/screenshotcreateanewvirlm6.png">http://img404.imageshack.us/img404/5869/screenshotcreateanewvirlm6.png</a> And when I clicked on Finish I got this error message: Unable to complete install 'libvirt.libvirtError virDomainCreateLinux() failed internal error End-of-file while reading PTY startup output Traceback (most recent call last): File "/usr/share/virt-manager/virtManager/create.py", line 677, in do_install dom = guest.start_install(False, meter = meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 649, in start_install return self._do_install(consolecb, meter) File "/usr/lib/python2.4/site-packages/virtinst/Guest.py", line 666, in _do_install self.domain = self.conn.createLinux(install_xml, 0) File "/usr/lib/python2.4/site-packages/libvirt.py", line 480, in createLinux if ret is None:raise libvirtError('virDomainCreateLinux() failed', conn=self) libvirtError: virDomainCreateLinux() failed internal error End-of-file while reading PTY startup output ' Now does this means I can't install fully virtualized guest (hypervisor qemu-kvm) with bootable cdrom support? Same thing happens If I try to install ubuntu from CD. It's full virtualization then why is it failing like this. Also I want to give output of "ps aux | grep libvirt" [root@server ~]# ps aux | grep libvirt root 2516 0.0 0.2 3344 1300 ? S 07:30 0:00 libvirt_qemud --system --daemon nobody 2627 0.0 0.1 1772 764 ? S 07:30 0:00 dnsmasq --keep-in-foreground --bind-interfaces --pid-file --conf-file --listen-address <a href="http://192.168.122.1">192.168.122.1</a> --except-interface lo --dhcp-leasefile=/var/lib/libvirt/dhcp-default.leases --dhcp-range <a href="http://192.168.122.2">192.168.122.2</a>,<a href="http://192.168.122.254">192.168.122.254 </a> root 7398 0.0 0.1 3888 708 pts/1 S+ 07:43 0:00 grep libvirt Thanks Deependra