Created
February 13, 2018 13:28
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macOS 10.13.3 ISO creation script (run from mac as sudo after downloading High Sierra from Apple Store)
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| hdiutil create -o /tmp/HighSierra.cdr -size 5530m -layout SPUD -fs HFS+J | |
| hdiutil attach /tmp/HighSierra.cdr.dmg -noverify -mountpoint /Volumes/install_build | |
| sudo /Applications/Install\ macOS\ High\ Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/install_build | |
| mv /tmp/HighSierra.cdr.dmg ~/Desktop/InstallSystem.dmg | |
| hdiutil detach /Volumes/Install\ macOS\ High\ Sierra | |
| hdiutil convert ~/Desktop/InstallSystem.dmg -format UDTO -o ~/Desktop/HighSierra.iso | |
| mv ~/Desktop/HighSierra.iso.cdr ~/Desktop/HighSierra.iso | |
| rm ~/Desktop/InstallSystem.dmg |
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Source: https://gist.github.com/agentsim/00cc38c693e7d0e1b36a2080870d955b#gistcomment-2304505