Open and format the drive as Mac OS Extended (Journaled) . Name the drive MyVolume .
💡 If you are on a Windows PC and cannot access a Mac to create the ISO, you may find community-hosted versions on the Internet Archive , though these are not officially verified by Apple. Apple macOS Catalina (10.15.7) - Internet Archive download macos catalina 10.15 iso and dmg image
Unmount and convert to ISO:
sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/CatalinaInstaller 3. Creating a Bootable ISO Open and format the drive as Mac OS Extended (Journaled)
If you have downloaded the DMG or the Installer application and wish to create a bootable drive for a Mac, follow these steps: follow these steps:
