hi to everyone... i have parallels desktop 6 and i've done a virtual machine with Windows XP on it... by default, hdd is with 20 Gb... now i'd like to expand a little more until 30-40 Gb . When i open the vm, i go in hardware-->hard disk and i click on Edit(expanding disk, 20.0 Gb) a window appear and i try to increase until 40 Gb the hdd. below this, there are: Resize file system (with flag) Expanding disk (with flag). i push on Apply... and after a few seconds, an error message appear: "Failed to resize the virtual hard disk. An internal error occured while resizing the disk." in more details is wrote this: Resizing failed. Unable to resize the last volume. The file system of this volume might be damaged or not supported. what should i to do?? what it mean??? many thanks guy!!