Mac OS X is no doubt an ultimate OS but when it comes to gaming and other software, Windows is the most widely supported platform. So for those who have MacBook Pro Retina and wants to enjoy the latest games at 2880 x 1800 resolution gaming, you can install Microsoft Windows 7 on MacBook Pro Retina with several simple steps. Follow this instruction you do not need remove the Mac OS X, you can have both Mac OS X and Windows 7 on your rMBP. Apple has provided a utility named Boot Camp to install Windows 7 on Mac OS X. It will cost about 2 hours to install Windows 7 by following the instruction.
1. USB Flash Drive(Minimum 4GB)
2. 64 bits Windows 7 Installation iso image.(you can find it from Internet then download it)
3. Internet Connection.
Step 1: Find Boot Camp and Open it
Searching the utility named Boot Camp from Launchpad or using Spotlight from Finder Bar. It will guide you in installation of Windows 7.