hi all my c drive is maxed out and would like to install secondary hard drive. i have another hdd in another computer that i can use but has os on it. i know to set it for slave but if i put it in and reboot will it start up correctly so that i then can go to device management and reformat. also do i need to partition it or just format? not trying to dual boot i just need more space. after sec, hdd is setup how do i move stuff from primary to slave? or will i need to even do so?