Make sure there are no other volumes mounted with the same name.Ĥ) Open a Terminal window and paste in the following command to move the installer to the USB drive and make it bootable: This will wipe all data from the drive.ģ) Name the USB drive “USB”. This will make the guide marginally easier. If the stick is not already formatted as GUID Partition Map and Mac OS Extended (Journaled), launch the Disk Utility application and format it thusly. If it is elsewhere on your computer, move it to the Applications folder. This tutorial will be marginally easier if you leave the file name as the default: Install macOS High Sierra.app.Ģ) Insert your >=8GB USB stick. When the download completes and your Mac launches it, quit the installer and check that it’s still in your /Applications folder. 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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