So my question is, iv used the windows 10 setup tool from MS. It has downloaded windows 10 and all that, and its in a folder called ESD on c drive. im running 8.1. My question is can i run the upgrade setup from c drive? i used to have windows 10 and tried to goto 7, the win7 iso was on c drive, it ran the setup radeyda but when it rebooted it started booting 7 but the setup had not finished, and it kept freezing as if it had lost the path to the setup files. Im wondering if upgrading from 8.1 to 10 (as the win10 setup files are in root of c drive) will i experiance this problem? or will the upgrade just run, restart into the setup process of 10? coz i dont want the install to "forget" where the setup files were. if this makes sence. please help i need to know asap. PS windows 8.1 is crap