One can not install anything let alone a new operating system when the only thing on screen is the flashing file folder w/? Mark.
Flashing ? Mark file folder.
MacBook Pro 13″, OS X 10.11
Apple Event: May 7th at 7 am PT
Flashing ? Mark file folder.
MacBook Pro 13″, OS X 10.11
One can not install anything let alone a new operating system when the only thing on screen is the flashing file folder w/? Mark.