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When the download completes and your Mac launches it, quit the installer and check that it’s still in your /Applications folder.
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How to create macOS High Sierra installerġ) Download the High Sierra installer from Mac App Store. It has since been updated with appropriate instructions for the public macOS High Sierra release. NOTE: This article originally provided instructions for creating a USB install drive from a developer-only beta of macOS High Sierra. In this guide, we’ll demonstrate how to create a USB install drive from your downloaded macOS High Sierra software update so that you can install it to multiple machines without redownloading, perform clean install, keep a copy safe for troubleshooting purposes and more.Īll you’ll need for this guide is a copy of macOS High Sierra from Mac App Store and a USB stick or an external drive of at least 12GB capacity.
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