How to make a copy of my entire iTunes Library on a portable external hard drive.
With all of my confusion about Apple Music vs iTunes, I want to make a copy of the iTunes library I've spent YEARS curating from CDs, purchased Apple Store music, Amazon music, etc. Where do I find the correct library file to copy, and how do I accomplish copying it to a Seagate Backup Plus Slim?
iMac Line (2012 and Later)