How can I globally transfer all of my raw image folders to an external hard drive without doing each on separately? I have a Mac and have searched the L/R website for an answer and found no solution. Thankx in advance, Bill
Use your operating system, copy the top level folder (that contains all of your subfolders with images) to the external HD.
Point Lightroom to the folders on the external HD using these instructions (scroll down to the section entitled "Updating Folder Location").