: mv /tmp/ElCapitan.iso.cdr ~/Desktop/ElCapitan.iso 3. Troubleshooting "Damaged" or Failing Images
hdiutil create -o /tmp/ElCapitan -size 8000m -volname ElCapitan -layout SPUD -fs HFS+J macosxelcapitan10111imageiso work
: Get OS X El Capitan 10.11 from the Apple Support site. : mv /tmp/ElCapitan