Hi, I add to check for the file-size of the disk. If the file-size is less than or equal to 0, it will show the following message: ERROR: Size of the disk image must be greater than 0 and ask again. Signed-off-by: Saori Fukuta <fukuta.saori@xxxxxxxxxxxxxx> Thanks, Saori Fukuta diff -r 797e92fd5e0d virtinst/Guest.py --- a/virtinst/Guest.py Thu May 31 14:20:33 2007 -0400 +++ b/virtinst/Guest.py Thu Jun 07 14:19:54 2007 +0900 @@ -57,6 +57,8 @@ class VirtualDisk: if not os.path.exists(self.path): if size is None: raise ValueError, "Must provide a size for non-existent disks" + if size <= 0: + raise ValueError, "Size of the disk image must be greater than 0" self._type = VirtualDisk.TYPE_FILE else: if stat.S_ISBLK(os.stat(self.path)[stat.ST_MODE]):