Hey all, Im having a hard time with this. I manage a school lab full of 30 imacs. Some are late 2015, some are late 2014. I want to create an image of a OSX El Capitan installation WITH 3rd party programs and user settings. I plan to use this image from a External USB hard drive, but I am seeing contradicting instructions out there as to how to do this. I want to use the image as a backup image so that if any of them go bad, I will have a drive that I can rely on. Can you all point me in the right direction or tell me what to do?