It looks like a newbie question but there is no way I could able to find answer for this and it still a mystery for me. Recently I have installed second HDD on my computer in which I would like to run some programs rather than storing data. Although I have uninstalled some programs which were previously included but the disk information was showing somewhat wrong result. If I am uninstalling the program, the HDD free space should increase but here it remains the same even after uninstalling around 4GB or programs. I have doubled check everything one it including hidden contents. It should show 50GB free but it reads as only 45GB free. Where is the other 5GB free space?