How to Move Photos Library to External Drive on Mac #Mac #Drive http://aumcafee.com/how-to-move-photos-library-to-external-drive-on-mac/ There are a number of benefits for using an external drive as your Photos library. If you have a giant collection of photos and videos, want to save your Mac’s space for other files, multiple users use your computer, or often swap computers and have work on images, then using an external drive as your primary photos library can be useful.