Hi, Thank you guys a lot. This time I didn't create the file manually. Just Let the virt-manager to do this. First, I try to use /home/jane/xen/box1, but it failed. So according to Dan's suggestion, I use /var/lib/xen/images/box1 as the storage location of guest OS. But why this file has to be under /var/lib/xen/images rather than /home? I didn't realize this problem when I was intalling the guesting OS before. Only /var/lib/xen/images is a valid directoy? Is there any other valid directory? And I found another problem even if I use /var/lib/xen/images/box1 : "The partition table on device xvda was unreachable. To create new partitions it must be initialized, causing the loss of All Data on this drive. This opeartion will override any previous installation choices about which drives to ignore. Would you like to initialize this drive, erasing ALL DATA? " So this means each time I want to install an guest OS, I have to create new partition? It seems not good. :( And I don't know how to solve this problem. This is the first time I use Fedora Core and XEN. I want to do some experiments about the VM migration with XEN. Do you guys have any idea of above problem? Thanks a lot. Regads, Angel -- Fedora-xen mailing list Fedora-xen@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/fedora-xen