* Note: if you are getting a “command not found” error and you are certain your syntax is correct, be sure to check the file size of the “Install macOS High Sierra.app” as found in the /Applications folder.
Once you have created the USB boot installer drive for macOS High Sierra, you can either launch it immediately to install macOS High Sierra on the current Mac, reboot and startup from the USB installer drive, or eject it and use it on another Mac. Let the installer complete, when finished you will be informed that the process has completed.Confirm the syntax is exactly as written, then hit the RETURN key and enter the administrator password to start making the High Sierra installer drive *.Sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/UNTITLED & say Boot Installer Complete Enter the following command syntax at the command line, replacing “UNTITLED” with your USB drive name if necessary:.Open the “Terminal” application found in /Applications/Utilities/ directory on the Mac.When the installer has completed downloading, it will automatically launch – quit out of the installer when this occurs.Download macOS High Sierra installer application from the App Store* and be sure the complete installer is located in the /Applications/ directory.Connect the USB flash drive to the Mac, if you need to format it go ahead and do so.How to Make a Bootable USB Installer for macOS High Sierra Making a USB install drive requires the usage of precise syntax at the command line with superuser privileges, using the wrong syntax could lead to unintended data loss. The complete macOS High Sierra installer application downloaded from the Mac App Store(some users end up with an incomplete installer sized at 19MB, you can follow instructions here to get the entire 5GB macOS 10.13 installer if necessary)īeyond that you’ll just need a bit of patience and a bit of technical know-how or comfort following technical instructions.A blank USB flash drive (16GB or larger is recommended) you don’t mind formatting, this will become the boot installer drive for macOS High Sierra.To create a functioning macOS High Sierra installer boot drive, you will need the following: Requirements to Create a macOS High Sierra Bootable USB Installer
This walkthrough will detail how to make a bootable USB install drive for macOS High Sierra.
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