Well I wiped my HDD and re-installed Win 7 64bit so I could migrate the OS to my new Samsung SSD 850 EVO (120GB) but when I went to use the Samsung data migration software it says that it doesn't have enough space to migrate all the files. With a clean wiped HDD I still have 123 GB left on the hard drive and Win 7 64bit takes up only 20GB (if I am correct) So, my question is where is the other 100GB coming from and how do I delete that data so I can migrate Win 7 on to the SSD (and yes i have deleted Windows.old)