With the demise of my main laptop which had the PDM vault on a 2nd drive I have switched to the online licence so that I can use my desktop as well. This now leaves me the question of where to put my PDM vault? I had my Toolbox within the vault as well. 

Can I install it on an external drive such that it can be plugged into either machine? I'm thinking yes on this if I allocate the drive a fixed letter.