Hi Folks, I tried many times to use feature Memory Ballooning with the latest Virtualbox on Ubuntu 14.04 x64, but no avail i created two vms windows 7 guest and assigned 1024 MB memory for each vm, what i want is configure memory ballooning as i understand from virtualbox manuals is share unused memory from vm1 to be used in vm2 for example vm1 used only 700 MB so how can i use the rest 300 MB to another vm so the total memory will be 1300 MB. any help plz Thanks in advance