For Windows 8/8.1, you can follow this video tutorial: • Como Crear Particiones en Windows 8 / 8.1 ...
In this video tutorial, I explain step-by-step how to create partitions in Windows 7, although the procedure also works in Windows XP and Windows Vista. The entire procedure is done without any program that we have to download or install; everything is done with a Windows tool.
I invite you to visit https://jetutoriales.blogspot.com/ where you will find useful tutorials and tools for computing, electronics, and technology in general.