You can now quit Terminal and eject the volume. Learn more A bootable installer doesnt download macOS from the internet, but it does require an internet connection to get firmware and other information specific to the Mac model. Mount your USB flash drive or other volume. The installer will be in your Applications folder. Quit the installer if it opens automatically after downloading.
If not, try using the link below to download it.
Again if you have got any question regarding this article How to install Mac OS X El Capitan on VirtualBox. If you have access to another Mac, try signing into the App Store using your Apple ID. Sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume How to install macOS from a USB TechRadar. Sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume Sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume Sudo /Applications/Install\ macOS\ Monterey.app/Contents/Resources/createinstallmedia -volume /Volumes/ MyVolume If it has a different name, replace MyVolume in these commands with the name of your volume. These assume that the installer is in your Applications folder, and MyVolume is the name of the USB flash drive or other volume you're using.