Once the macOS Sierra installer has been completed, the USB flash drive will be named as “Install macOS Sierra” and it’s ready to be used. When you see “Done” on screen, the task is complete and you can quit out of Terminal.Let the process run it’s course, this will take a while depending on the speed of the target flash volume but you can expect to wait nearly 30 minutes.Enter the admin password into the terminal if requested.Double-check to confirm the syntax is accurate, and remember the USB drive is going to be erased in this process, then hit the Return key to start creating the macOS Sierra USB installer media.Sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia -volume /Volumes/SierraBootInstall -applicationpath /Applications/Install\ macOS\ Sierra.app -nointeraction &say Done Place the following command syntax into the Terminal:.Open “Terminal”, found within /Applications/Utilities/.Connect the USB flash drive to the Mac, then rename the USB drive to “SierraBootInstall” – yes you can pick a different name just be sure to edit the command syntax to reflect that.Do not use a USB flash drive that you don’t want erased. Remember, this is going to erase the USB flash drive and turn it into a bootable installer for Mac OS 10.12. Creating a macOS Sierra Boot Install Drive Additionally, it needs to be in the /Applications/ folder because the command syntax assumes that is the application path.Īs far requirements go, having a USB flash drive and the release version of macOS Sierra are all the tis necessary, though having some degree of patience will be helpful because it can take a while to successfully create the boot installer.
You’ll want to be sure you have the final version of the “Install macOS Sierra” app in the /Applications folder, this is important because the process using the final versions of macOS Sierra installer is slightly different than performing the same bootable installer using the beta versions. Download macOS Sierra from the App Store onto the Mac and have the Installer app located in the /Applications/ folder – you can re-download it from the Purchases tab if need be.USB flash drive (8GB or larger), this will be formatted and become the MacOS Sierra installer volume.The basic requirements necessary to make a boot macOS Sierra installer are as follows: This walkthrough will demonstrate the exact steps necessary to create a boot installer drive for the final version of macOS Sierra using a USB flash key or a similar thumb drive.
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