Thanks. >Specify size at the end Is that the same as the size of the /opt/qemuvm/win2xpsp3_32_c.img ?
May i ask what is the difference between the following commands 1) qemu-img create -o backing_file base.img new.img 10G 2) qemu-img create -f qcow2 -b base.img new.img Regards, Mahmood