Can you please advise me on how to move all the files you mention? 

I 'cut & paste' all the contents of the various folders which are shown in the Pinnacle Import, Save To list from the C: drive to the F: drive creating new folders with the same names.  The result was I lost all the projects so I swiftly reversed all my actions and got back the projects.  

I'm not a computer expert so how do I do this procedure to free up space on my C: drive?  Thanks.