Strange "thing" after re installing Win 7 ?

alexander92

Honorable
Sep 25, 2013
18
0
10,510
Yesterday i re-installed Windows 7 Ultimate 3-4 times in a row (don't ask why :D ) and every time Windows installation is different size...To explain a little bit better.....I have 48Gb C partition,and first time i reinstalled,it was 40,7gb free space,next time 41,1,and after that two times 38.5gb free(everything is fine with my HDD,so that is not a problem)...Can somebody explain me why is this happening,it's very confusing...? :??: