I believe I have an expanding disk. It currently takes 31.82GB When I look at the guest OS HDD it says 13.8 is being used. I go to Virtual Machine>Compress and get this message I don't think I understand what's wrong. Can anyone help? I'm using parallels 6 Also I don't know if this is important but I imported this VM from a bootcamp partition (then promptly deleted the bootcamp partition) Also when I look at the HDD it says it's an expanding HDD. I've tried unchecking that box but it says I don't have enough drive space.