4/6/2023 0 Comments Install big sur flash driveSudo '/Applications/Install macOS Big Sur.app/Contents/Resources/createinstallmedia' -volume '/Volumes/Untitled' Please note this will erase the entire USB key. 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 replacing 'Untitled' with the name of your USB key. If it's tiny (~20MB), you can either run it to install macOS Big Sur and then redownload the installer, or delete it, upgrade to the latest version of Catalina from the Mac App Store, then redownload the installer. If it's 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 Big Sur' app. ![]() Once the 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 update. Navigate to the macOS Big Sur application page and click the Get button.
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