I've been using LR5 on a PC which was failing. Before it became totally disabled, I copied my entire Photos folder structure and the Lightroom folder (the one that contains the catalog, backups, etc.) to an external USB drive. I have now installed LR CC on my new PC, but I'm uncertain how to proceed.
In summary, the LR5 application and associated folders and all my pictures were on drive C of my former PC. They were cleanly copied (not moved) to the external drive prior to Drive C failing. I have installed LR CC on the new PC, which now has that external drive attached.
My question is, how do I sync the LR CC on my new PC to the pictures and LR5 files on my external drive?