Installing MAC X OS

I have Formatted the Original HDD of the MAC A1150 using the DiskUtility of another MAC so that the Formatting Type is compatible….

I have created a Bootable USB with El Capitan Using command Line by the following command.

sudo /Applications/Install\ OS\ X\ El\ Capitan.app/Contents/Resources/createinstallmedia --volume /Volumes/TOSHIBA--applicationpath /Applications/Install\ OS\ X\ El\ Capitan.app

The CLi successfully formatted the USB and installed the Installation media for El Capitan enabling the USB to be a Bootable Device… However, When I insert the USB into the MAC > Power up the Mac whilst holding Option And then selecting onto the Bootable Device I am getting presented with……..

A FOLDER WITH A QUESTION MARK INSIDE !! Any ideas to why or how I can resolve?