Got this from here: http://blogs.technet.com/b/danstolts/archive/2011/04/02/how-to-expand-and-extend-to-increase-capacity-on-a-virtual-hard-disk-the-easy-and-fast-way-solve-the-problem-of-out-of-disk-space-on-drive-c-forever.aspx First, if you have subversions of the PVS disk, merge it to a new base and then rename the new vhd, pvp and lok file. Continue Reading →