I have recently started preparing my older Mac Pro 4,1 (Early 2009) 8-Core Dual 2.26MHz for switching OS X from Snow Leopard 10.6.8 to El Capitan 10.11.6.
I have a new Samsung EVO 1TB SSD drive on the way for the install of the new OS. I also downloaded the El Capitan Installer and saved on my...