I have also manually created a Firewall rule to allow Magician to access the Internet, although I really do feel that is clutching at straws, as there is no reason why it shouldnt be able to connect by default.
I browsed many posts and followed some steps from a 'Samsung Dave' but to no avail. I see that many other users are having this same issue. The PC booted as normal when I turned it on, and the greater space showed in the 'C' drive.
I then turned my PC off, and simply swapped out the smaller one, for the bigger one inside my case.