Is my Mac too old to update Apple said that would run happily on a late 2009 or later MacBook or iMac, or a 2010 or later MacBook Air, MacBook Pro, Mac mini or Mac Pro. High Sierra is so similar to Sierra in so many ways that it’s honestly pretty hard to tell them apart. El Capitan was replaced by Sierra 10.12, High Sierra 10.13 and the current release, macOS 10.14 Mojave. Press Option/Alt as you start up your Mac. Updates like Mountain Lion and El Capitan have drawn comparisons to Snow Leopard for focusing on refinement rather than features, but High Sierra is the closest thing we've gotten to a 'no new features' update in years. Similarly, if you installed High Sierra on a Mac with an SSD and wanted to revert to Sierra. But the UI doesn’t change, apps get only minor updates (when they get them at all), and multiple features continue to be more limited than their iOS counterparts. Changing filesystems, adding external graphics support, adding support for new image compression formats, and updating the graphics API to support VR are all important, and none of them are small tasks.

That's not because there's nothing here but because most of Apple's development work this time around went into under-the-hood additions and updates to foundational technologies. If you've felt like the last few macOS releases have been a little light, High Sierra won't change your mind.

Update mac el capitan to high sierra