hdiutil attach /Applications/Install\ macOS\ Sierra.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/install_app hdiutil create -o /tmp/Sierra.cdr -size 7316m -layout SPUD -fs HFS+J hdiutil attach /tmp/Sierra.cdr.dmg -noverify -nobrowse -mountpoint /Volumes/install_build asr restore -source /Volumes/install_app/BaseSystem.dmg -target /Volumes/install_build -noprompt -noverify -erase rm /Volumes/OS\ X\ Base\ System/System/Installation/Packages … Les videre →

Routine for the GM: sudo /Applications/Install\ macOS\ Sierra.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –applicationpath /Applications/Install\ macOS\ Sierra.app –nointeraction

Business as usual: sudo /Applications/Install\ 10.12\ Developer\ Preview.app/Contents/Resources/createinstallmedia –volume /Volumes/Untitled –applicationpath /Applications/Install\ 10.12\ Developer\ Preview.app –nointeraction For older versions check Apple’s HT201372: https://support.apple.com/en-is/HT201372