EasyBCD is a great software to create a dual operating system and you can also has a great way of create a bootloader for your testing purposes the links are down below and i will make a video very soon.
Enjoy and don’t forget to come back later.
Mediafire Download Link:
http://www.mediafire.com/file/1k9dvw4crfwbwl1/EasyBCD2.4.exe/file