I've used the new Mac ImageTool.app to try and enlarge my default 3.99GB drive to something larger -- I tried 6144MB, then 6148MB. The application executes fine. But the VM reports that the drive is still the same size (both times). Am I doing something wrong? Has anyone else had success with enlarging a drive? This is an Expanding drive. MBpro 15, 10.4.6, 2GB RAM. Beta6. Tx.