How to create macOS bootable ISO. Convert dmg to iso step by step

by Nov 2, 2020iOS & macOS, Software0 comments

How to create macOS bootable ISO. Convert dmg to iso step by step

Easy steps to create macOS Catalina ISO image by converting dmg to iso to install on a virtual machine or for other uses.

Applies also to other macOS versions.

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Commands to create the ISO file:

  • hdiutil create -o /tmp/Catalina -size 8900m -volname Catalina -layout SPUD -fs HFS+J
  • hdiutil attach /tmp/Catalina.dmg -noverify -mountpoint /Volumes/Catalina sudo /Applications/Install\ macOS\ Catalina.app/Contents/Resources/createinstallmedia –volume /Volumes/Catalina –nointeraction
  • hdiutil detach /volumes/Install\ macOS\ Catalina
  • hdiutil convert /tmp/Catalina.dmg -format UDTO -o ~/Desktop/Catalina.cdr
  • mv ~/Desktop/Catalina.cdr ~/Desktop/Catalina.iso

Disclaimer: Use the instructions in this video at your own risk. We are not responsible for any data loss or other damages that may occur

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