We don’t know exactly how long your macOS High Sierra update will take since download times will vary based on your Internet connection and based on your device. Plan to set aside a little bit of time for this update, during which you cannot use your computer. If you are already on macOS High Sierra and just need to install the latest release like macOS 10.13.5, it will take at least 20 minutes to install. It will take longer to upgrade from macOS Sierra to macOS High Sierra. One of the most common questions is, “how long does the macOS High Sierra update take to finish?” The macOS High Sierra update is large, and you may see an even larger update size if you are not coming from macOS Sierra. The new macOS 10.13.5 update is smaller and more focused, but it still takes a while to install.

If you’re prepared, the new upgrade shouldn’t take too long to install on your MacBook, MacBook Air, iMac, MacBook Pro or other Mac.Īpple’s High Sierra update first arrived in late 2017 with plenty of new features for your Mac. The macOS High Sierra update is big, but the longest part of the upgrade is the installation for most users.

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