![]() Whether or not creating a macOS installer ISO file and using that ISO is easier than simply using a bootable USB flash drive is entirely a matter of use cases, and in some situations an ISO is the only usable format (ie for certain virtualization scenarios). ISO files are flexible and widely used, they can also be burned to create boot disks and to other media, and you can also copy the ISO to a USB drive with dd or perform any other multitude of actions. You can also convert ISO files to VDI VirtualBox images if needed. If you intend on using the ISO file for a virtual machine, you simply need to select the Mojave.iso disk image in the virtual machine app as a boot disk, or mount it within the VM as any other disk image would be. That’s it, now you should have an “Mojave.iso” disk image file on the Mac desktop which is the macOS installer ISO image. Mv ~/Desktop/Mojave.cdr ~/Desktop/Mojave.iso Finally, we rename the CDR file extension to ISO to convert the CDR to ISO:.Hdiutil convert /tmp/Mojave.dmg -format UDTO -o ~/Desktop/Mojave.cdr Now we convert the DMG disk image file to an ISO disk image file (technically a CDR file but it’s the same as an iso).Hdiutil detach /volumes/Install\ macOS\ Mojave When createinstallmedia has finished, next you can unmount the volume you just created:.Sudo /Applications/Install\ macOS\ Mojave.app/Contents/Resources/createinstallmedia -volume /Volumes/Mojave -nointeraction Next we will use createinstallmedia to create the macOS installer application on the mounted volume:.Hdiutil attach /tmp/Mojave.dmg -noverify -mountpoint /Volumes/Mojave ![]()
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