![]() Please note this will erase the entire USB drive. Once you've verified that you have the full installer, launch Terminal from the Applications:Utilities folder.Įxecute the following command in the Terminal window to create a macOS Sonoma installer, replacing 'Untitled' with the name of your USB key. You can delete it and use one of the direct download links found here. You can delete it, upgrade to the latest version of Sonoma from the Mac App Store, then redownload the installer.ģ. You can run it to install macOS Sonoma and then redownload the installer.Ģ. If it's tiny (~20MB), you have a few options.ġ. ![]() If the macOS Sonoma installer app is over 10GB, skip to the next step. Press Command+i on the keyboard and verify its size. Open your Applications folder and select the ' Install macOS Sonoma' app. Once the macOS Sonoma installer launches, press the Command+Q keys on the keyboard to exit. You may be brought to a Software Update window, click Upgrade Now or Download to begin downloading the macOS installer. Navigate to the macOS Sonoma application page and click the Get button to download macOS Sonoma. You can now eject the volume and close the Terminal.To create a bootable installer, connect a 16GB or larger USB flash drive (formatted to Mac OS Extended) to your computer, then launch the Mac App Store from your dock. The volume will have the same name as the installer you downloaded after Terminal indicates that it is finished, for example, Install macOS Sonoma.To enable the copy to continue, click OK. You can get a warning saying that the Terminal would like to access files on a removable volume after the volume has been wiped.As the volume is erased, the Terminal shows. ![]() Type Y to indicate that you want to erase the volume when asked then hit Return.As you type, there are no characters displayed in Terminal. Enter your administrator password when asked.sudo /Applications/Install\ macOS\ Sonoma.app/Contents/Resources/createinstallmedia -volume /Volumes/MyVolume Replace MyVolume in the command with the name of your volume if it has a different name. It is assumed that the installer is located in your Applications folder and that the USB flash drive or other volume you're using is called MyVolume. Enter the following command into Terminal and then press Return.Open the Terminal tool from the Finder > Applications > Utilities.When the installer automatically opens after downloading, quit it and do not install it here. Download macOS Sonoma from the Mac App Store and search for macOS Sonoma, click Get to download the installer. ![]() Connect the Mac OS Extended-formatted USB flash drive to your Mac.If everything is ready, we can dive into the detailed steps to make a USB bootable installer for macOS Sonoma. Steps to create the macOS Sonoma bootable installerĪpple has made it possible for Mac users to utilize Terminal commands to install macOS on an external storage device ever since the release of OS X Mavericks in 2013. During the process, you will need to download the macOS installer from the webpage or the App Store, and a good internet connection is required. Quality and stable internet connection on your Mac. You will need to get the macOS Sonoma installer on the Mac used to create the USB bootable installer so that the Mac model should be supported by macOS Sonoma.Ĭ. A healthy Mac that is compatible with macOS Sonoma. A USB flash disk with at least 16 GB of available storage given that the macOS installer file is about 13 GB, and the USB flash drive should be formatted as Mac OS Extended.ī. Things needed to make a macOS Sonoma bootable installerīefore beginning, you will need the following to be able to create a USB bootable installer for macOS Sonoma:Ī.
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