So if I have a dynamical storage in virtualbox guest, how can I reduce the VDI's size, if there are many unused place in the guest?
So I mean I know the virtualbox guest in reallity is about ~3 GByte's large, but the VDI file is 10 GByte, because once a while the guest was that big. But it's now only 3 GByte's big. How can I reduce the VDI's size? So that it would be only 3 GByte's big? (and no, there aren't any snapshot's about the guest)