: Must be running OS X Snow Leopard (10.6.8) or later to upgrade. Memory : Minimum 2GB RAM (4GB recommended).
GitHub user corpnewt created a script that downloads installers directly from Apple’s software update catalog. mac os x el capitan download dmg
: Open the InstallMacOSX.pkg file inside. Run through the onscreen prompts—note that this does not install the OS yet; it simply places the "Install OS X El Capitan" app into your Applications folder . : Must be running OS X Snow Leopard (10