Next find a USB flash drive that is at least 8GB or larger. If you get a pop up to install Sierra, simply ignore it or force quit the install from the Apple menu.

(Other OS X versions click here.) Steps to Create a Mac OS Sierra Bootable Installer Get the latest installerĭownload the latest macOS Sierra Installer from the AppStore. These steps will walk you through the process. In my opinion, if you’re looking to install a fresh copy of macOS High Sierra, this is the best way to go about doing so.You can easily create a Mac OS Sierra bootable installer on a USB flash drive using Terminal. Once the process is finished, you’ll have a working macOS High Sierra bootable USB install disk that can be used to install macOS High Sierra beta on any Mac that supports it. The entire process is quite lengthy - it can take around 20-30 minutes - so you’ll need to be patient as the install process completes. Step 15: The install process will commence by erasing the contents of your USB drive and copying the installer files to the drive. Step 14: Type a ‘Y’ to continue when prompted to do so, and press Return on the keyboard. Step 13: Press Return on the Keyboard to submit the full command. Step 12: Open Finder → Applications and drag Install macOS High Sierra Beta into the Terminal window. Step 11: Type -applicationpath in the Terminal window followed by a space.

Step 10: Drag the USB flash drive volume into the Terminal window. Step 9: Connect your USB drive to your Mac. Step 8: Type -volume followed by a space. Step 7: Drag createinstallmedia into the Terminal window from the Finder location opened in Step 4. Step 6: In the Terminal window type sudo followed by a space. Step 5: Open a macOS Terminal window via Applications → Utilities → Terminal. Step 3: Open Finder → Applications and right-click on Install macOS High Sierra Beta and select Show Package Contents. Step 2: Once macOS High Sierra is downloaded, close the installer that appears using Command (⌘)+Q. Until then, you can access the High Sierra beta from Apple’s developer website, or via Apple’s public beta website. Once High Sierra officially launches, you’ll be able to go directly to the Mac App Store and download it. Step 1: Download macOS High Sierra from the Mac App Store. Your USB drive should be at least 8GB, and USB 3.0 is preferred. Keep in mind that the following tutorial will purge everything on the drive, so make sure you back up any important data before proceeding. Not only will this walk through work for the macOS High Sierra beta, but it will also work for the final public release once available.Ī note about flash drives: You will need a USB flash drive to make this work. If you want the ability to perform a fresh and clean install of macOS High Sierra, then you should consider creating a bootable macOS High Sierra USB install drive.

Macos sierra bootable usb