I got a macbook air 13inches with 128 GB as a birthday present last month. At that time, I also had an ASUS core i5 and I had been using both. However, my ASUS got broken 4days ago and I'm thinking to have a Windows 7 bootcamp on my macbook air. I want to know the minimum suitable partition size for Window 7 Home Premium version. I will use Window only for games like Dota2 and for antivirus and USB security software as some attacked files cannot be detected on mac. For mac, I am using programming software like eclipse, netbeans, Xcode and dreamweaver, etc. So, I want window 7 size to be as small as possible. Replies with calculations will be more beneficial for me.