Macosxelcapitan10111imageiso: Work

/Applications/Install OS X El Capitan.app/Contents/SharedSupport/InstallESD.dmg Copy this file to your Desktop.

sudo dd if=/dev/rdiskN of=~/Desktop/ElCapitan10.11.1.iso bs=1m (Replace rdiskN with your USB’s raw disk identifier – use diskutil list to find it.) macosxelcapitan10111imageiso work

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/Untitled --applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app --nointeraction Then, create an ISO from the USB: /Applications/Install OS X El Capitan

hdiutil create -o ~/Desktop/ElCapitan10.11.1.cdr -size 7.2g -layout SPUD -fs HFS+J -type UDTO -attach ~/Desktop/InstallESD.dmg Note: The above is an example. In reality, you need to use the mounted volume path. A more reliable method is: macosxelcapitan10111imageiso work

On a Mac with the El Capitan installer app:

mv ~/Desktop/ElCapitan10.11.1.cdr ~/Desktop/ElCapitan10.11.1.iso Check that the ISO is bootable by mounting it: