> try adding "-F base-fmt". Also qcow is obsolete, you'd better use qcow2 > e.g. qemu-img create -b Ubuntu.img -F raw -f qcow2 /home/prasad/Virtual/Ubuntu_copy.ovl [root@prasad images]# pwd /var/lib/libvirt/images [root@prasad images]# date; qemu-img create -b Ubuntu.img -F raw -f qcow2 /home/prasad/Virtual/Ubuntu_copy.ovl Wed Nov 10 09:44:31 GMT 2010 Formatting '/home/prasad/Virtual/Ubuntu_copy.ovl', fmt=qcow2 size=8589934592 backing_file='Ubuntu.img' backing_fmt='raw' encryption=off cluster_size=0 [prasad@prasad Virtual]$ ls -l total 136 -rw-r--r--. 1 root root 262144 Nov 10 09:44 Ubuntu_copy.ovl [prasad@prasad Virtual]$ sudo qemu-kvm ${PWD}/Ubuntu_copy.ovl -m 512 qemu: could not open disk image /home/prasad/Virtual/Ubuntu_copy.ovl: No such file or directory [prasad@prasad Virtual]$ sudo qemu-kvm Ubuntu_copy.ovl -m 512 qemu: could not open disk image Ubuntu_copy.ovl: No such file or directory [prasad@prasad Virtual]$ sudo qemu-kvm ./Ubuntu_copy.ovl -m 512 qemu: could not open disk image ./Ubuntu_copy.ovl: No such file or directory > Where can I get the code of the qemu-kvm program? I cloned the qemu-lvm git repository and compiled the code. But it looks like qemu-kvm program is not part of this code.-- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html