Sorry, how stupid I could be shame ... I was indeed totally wrong ... smirk
The message on the back of the box confused me enormous ...
but 4 MB is sooo little for a full game installed on HDD biggrin

On 7th of february 2015 : I start a new adventure in the Divinity world of Original Sin,
it's a Fantastic Freaking Fabulous Funny ... it's my All Time Favorite One !