Lightroom FAQ: Update Folder Location

This is useful function to know about if you are wanting to move a folder (or even your entire photo Library) from one drive to another drive. For example, say you are running out of space on one drive and want to move photos to a new drive to free up space on the original drive.…

source https://photofocus.com/2017/06/20/lightroom-faq-update-folder-location/