How the forget do you guys do that? My Windows partition is half of my 1TB HDD and it's only half full.
WinDirStat only visually displays the information on the disk, as the option to show free space is disabled by default.
His hard drive might only have 300 gigs of stuff on it, or something close to that.
Here's a better representation;
My terabyte hard drive:
![](http://puu.sh/hCvRI/9fe9dded1a.png)
The red block on the far left is Payday 2, the Green block with the several thousand files beside it is World of Tanks, and the big blue and grey part is Windows.
Now if I throw in the Free Space:
![](http://puu.sh/hCwao/6c6038c0ea.png)
That big grey block is my free space.
Just because the whole display is full of shiny lights and boxes, doesn't mean the hard drive is full.