I remember, the first try was w7 with 29g of missing space. You did that 3 times using a couple of different install disks, each with the same or greater space loss (one was as high as 40g). Then you tried w10 with 18.5g of used space, before updates, on the SSD. Beyond that I don't remember......
Fractal Design R5 | Asus Z170 Pro | Intel i5 6600k | 16 GB G.Skill Ripjaws DDR4 2133 | Seasonic 650w PSU | eVGA GTX 550 TI | Samsung 960 M2 500 GB | Samsung 850 EVO 500 GB | ASUS Burner | Windows 7 64-bit