OK guys here is my story and hope to get some responses. Previously I have installed 64bit Win 8 successfully through bootcamp and everything was smooth, due to not being able to update the Win 8 to 8.1 I was forced to remove it and install Win 8.1 from scratch. When I was on Win 8 and if I restart the PC, it was restarting to Win 8 by default, unless I had to press the alt key if I ever wanted to boot to OSX or from the bootcamp option selecting restart to OSX. This is not happening with Win 8.1, but I will tell you how I installed Win 8.1. Installation of Win 8.1 through bootcamp was not possible I was getting this error during the installation After searching the internet I found a solution to install Win 8.1 without bootcamp. I forgot the site but here are the steps: 1. Create a free space from Disk Utility with the desired size. 2. Burn Win 8.1 on a flash drive. 3. reboot the PC and chose EFI boot to boot Win 8.1 installation. From there, format the free space drive and install Win 8.1 from the formatted drive. 4. Install bootcamp drivers. The installation was done successfully. But the issue with this installation is, when I am on Win and if I restart the computer it will boot to Mac and every time I restart I have to press alt key to bring up the boot options Do you know how to avoid this? Any solutions. Thanks in advance.