Iatkos ML2 not regconize enough memory ram #iATKOS #ML2

I install Iatkos Ml2 on my laptop with 4GB. When i use about my mac, it shows that a macbook pro with 4gb of ram. However, when i use activity monitor, and select the system memory tab, is show that the total ram is 3.25..



WHat is the problem..Help me :)



Thank you in advance !