Mac OS Catalina ISO create

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Download mac os Open terminal In this step, copy and paste these command one by one. Create a DMG Disk Image hdiutil create -o /tmp/Catalina -size 8500m -volname Catalina -layout SPUD -fs HFS+J Mount it to your macOS hdiutil attach /tmp/Catalina.dmg -noverify -mountpoint /Volumes/Catalina Create macOS Catalina Installer sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia --volume /Volumes/Catalina --nointeraction Unmount Catalina Disk hdiutil detach /volumes/Install\ macOS\ Catalina Convert the DMG file to an ISO file hdiutil convert /tmp/Catalina.dmg -format UDTO -o ~/Desktop/Catalina.cdr Rename and Move to Desktop mv ~/Desktop/Catalina.cdr ~/Desktop/Catalina.iso

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