How to create macOS bootable ISO. Convert dmg to iso (Easy step by step guide)

Опубликовано: 09 Октябрь 2020
на канале: Knowledge Sharing Tech

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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:
***Remark for Big Sur***
Replace Catalina with bigsur
The size on the 1st command should be 16384m
The 3rd command will be: sudo /Applications/Install\ macOS\ Big\ Sur.app/Contents/Resources/createinstallmedia --volume /Volumes/bigsur --nointeraction

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

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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