Once you have the file, you likely want to put it on a USB drive (minimum 16GB).
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/CatalinaUSB Use code with caution.
Run the following command (assuming the installer is in your Applications folder):
Always verify the checksum of files downloaded from non-Apple sources to ensure they haven't been tampered with. Creating a Bootable USB from the DMG
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Please enter your email Download Macos Catalina 10.15.7 Dmg File
Once you have the file, you likely want to put it on a USB drive (minimum 16GB).
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/CatalinaUSB Use code with caution.
Run the following command (assuming the installer is in your Applications folder):
Always verify the checksum of files downloaded from non-Apple sources to ensure they haven't been tampered with. Creating a Bootable USB from the DMG
