Hello, I have to use attach-disk function for providing additional storage to the guest domain but i couldn't found proper documentation anywhere which i can follow. ---- For linux (Ubuntu 11.10 server edition, 64bit) guest i tried qemu-img create -f qcow2 disk.qcow2 size virsh attach-disk guest_name --driver file disk.qcow2 sdc Both of the above commands are working fine but when i try to format the drive from inside linux then its size reduces to few KB. Before formatting qemu-img info reports correct info(as expected, correct virtual size) but after formatting the even qemu-img info reports its actual size(few KB) not virtual size. ----- For windows (Windows 2008 Server R2) guest, i tried qemu-img create -f raw disk.img size virsh attach-disk guest_name --driver file disk.img vdb virsh shows that the disk is attached successfully, but i cannot find any disk attached from inside the guest (in storage management). I tried rebooting the guest but same problem. Is there anything that i am doing wrong or missing. -- Jatin Kumar