Eureka! - I created a virtual machine v1 for windows 7. The OS size with all programs I need is 30gb total, but when I come to check the disk file, the size is 49gb... my question is... if windows 7 OS is using a total of 30gb why do I have a 49gb file? I'm trying to backup and the extra 19gb make this a more difficult task... i tried to turn off the machine, edit the disk and "compact" but it's like doing nothing... is there a better way to optimize the disk file? do I need a third party tool?
thank you for your kind help.
PD. As my question is not understood, I will try to explain it in a different way. I successfully created a VM using Hyper-V, the version is 1 and it works fine. When I'm inside of the VM working (with windows 7 by the way), I check the size of my space usage (my programs, updates, drivers, etc and OS), the total is almost 30GB... when I come back to my server (out of my VM), I noticed the disk file is 49GB, I tried to compact without success, my question is... how do I reduce such difference? I do understand it should be a little bigger but 19GB is a lot of space... thank you for your help.

