i have a Dell precision 5510 and i got a new samsung 960 EVO SSD for my empty NVMe M.2 slot. I copied the data from my HDD(still connected) using samsung data migration then i deleted a few things( WoW and Steam) because i just want the OS on the SSD and games and other stuff on the HDD. Im not sure how to boot from the OS on the SSD and what stuff to delete off of the HDD that has to do with the OS.