No matter which way you choose, always remember to back up your data before performing an upgrade.Īpple has its own official backup tool: Time Machine. There are two ways to upgrade macOS: directly in Mac App Store, or upgrade using an USB device. If you are running OS X Lion (10.7.5) or later, you can upgrade directly to macOS High Sierra. Some features, such as High Efficiency Video Coding (HEVC) encoding and decoding require newer processors and devices, some of which unfortunately cannot run on older devices.
