Make yosemite iso

gistfile1.txt

From https://discussions.apple.com/thread/6619535
by tywebb13


If you prefer to make a bootable dvd, you can do it this way:
 
After downloading the full Yosemite installer app from the Mac App Store, run these 14 commands in Terminal to create a Yosemite.iso file and then burn it to a dual layer DVD with Disk Utility. You may then boot up from it by holding the option key down and then install Yosemite.
 
hdiutil attach /Applications/Install\ OS\ X\ Yosemite.app/Contents/SharedSupport/InstallESD.dmg -noverify -nobrowse -mountpoint /Volumes/install_app
 
hdiutil convert /Volumes/install_app/BaseSystem.dmg -format UDSP -o /tmp/Yosemite
 
hdiutil resize -size 8g /tmp/Yosemite.sparseimage
 
hdiutil attach /tmp/Yosemite.sparseimage -noverify -nobrowse -mountpoint /Volumes/install_build
 
rm /Volumes/install_build/System/Installation/Packages
 
cp -rp /Volumes/install_app/Packages /Volumes/install_build/System/Installation/
 
cp -rp /Volumes/install_app/BaseSystem.chunklist /Volumes/install_build
 
cp -rp /Volumes/install_app/BaseSystem.dmg /Volumes/install_build
 
hdiutil detach /Volumes/install_app
 
hdiutil detach /Volumes/install_build
 
hdiutil resize -size `hdiutil resize -limits /tmp/Yosemite.sparseimage | tail -n 1 | awk '{ print $1 }'`b /tmp/Yosemite.sparseimage
 
hdiutil convert /tmp/Yosemite.sparseimage -format UDTO -o /tmp/Yosemite
 
rm /tmp/Yosemite.sparseimage
 
mv /tmp/Yosemite.cdr ~/Desktop/Yosemite.iso