Installing Mint Cinnamon 18 64bit on a separate drive

Hi Uncle Urmas, can I delve deeply Into your mind. I have decided to install Linux 18 Cinnamon onto my PC as this is a long term Distro until 2021. At the moment I am running Linux Mint Cinnamon 17.3 64bit on a 1500 hard drive but intend to keep that as if it all goes pair shaped I can re install it with no trouble at all.
Now I intend to install Mint Cinnamon 18 64bit on a spare disc a Seagate desktop SSHD 2000GB what advice can you give me or what should I look out for? Any help or advice...

Installing Mint Cinnamon 18 64bit on a separate drive