I have dual booted my machine with centos-7 with already installed windows-8 64-bit by default.
If I power on my machine then windows-8 is booting directly without any boot screen.
If I want to boot centos-7 then I need to go to boot options and there I need to select centos7 manually.
When I restart my machine then again windows-8 is booting automatically either I'm in centos or in windows. If I want to restart my centos, after pressing restart button windows is booting automatically. If I want to restart my windows, after pressing restart button windows is booting automatically.
I'm not getting any boot screen which shows the list of operating systems with black background screen.
centos is working fine, windows as well.
This is my problem and I'm not so aware of these things but I have little knowledge in this.
How can I get the boot screen to select or switch between operating systems ? Please help me...