So, I have ubuntu 14.04 LTS in a 1tb hard drive and I want to create a small partition (150GB) for Windows 8.1. I have already got the bootable drive for it, but I need to make another partition as the one I have ubuntu on is not NTFS, and windows installer asks for it.
So what steps should I follow to create a 150Gb partition then installing W8? I just need a simple answer.