Old Software on a Newish iMac
I am currently running a 2017 iMac (High Sierra 10.13.6). I have a 2008 Mac Pro (El Capitan 10.11.6) with some old software I'd like to continuing using. Can I remove the startup disk from the 2008 Mac Pro and connect it to my iMac and run the old software? Would I need to boot the iMac from the Mac Pro startup disk for it work? Is it safe to do that?
iMac Line (2012 and Later)