There are few things which you will need for installation. But first you need to make sure that your laptop or pc supports Intel Virtualization technology because this is a necessity to run Mac OS X Capitan on Windows 10 and most new laptops and pc which comes with i3 and above processors have this feature.
When you are planning to run Mac OS X 10.11 EI Captain on VirtualBox and that too on windows, it will kill a fraction of your extra energy but when done it is awesome. So, download Image and install the same and get a first-hand look and feel into the whole virtual set up and how it operates and helps you.
You will require following softwares:- 1. You have to (Intel VT-X) from Bios.
If your pc, doesn't supports Intel VT-X, then you won't be able to install Mac OS on your Windows operating system. Once we have all the files extracted on the desktop, go to the Unlocker, the second last file is win-install, right click it select run as administrator. A console window will open.
Just wait for that, once that is done (it will disappear automatically), then go to desktop where you have extracted all the files and click on OS X 10.11 EI as shown in the image. You will get a message ' Cannot connect the virtual device sata0:1 because no corresponding device is available on the host. Do you want to try to connect this virtual device every time you power on the virtual machine?' Simply select yes. You will get another window just click Ok on it.
Then you will get an another window which will ask How do you want to close the virtual machine. Just click on Power off button and then close that window by pressing the red cross in top right corner.
You will get an other window like the one I below. Just click on Take Owner ship button as shown below.