I looked up guides to install ubuntu, but they all say that you can choose the option: "install along windows". But The option is long gone, so i read... . Now i shrinked my windows partition, and get a new extra partition. When i install ubuntu using a usb device, everything goes well, but when i need to choose a partition to install ubuntu on, i can't use the partition i created because it's not usable... . So i think i have to format the partition but i don't know how.
Can someone help me?
P.S. : The main goal is to run a dualboot system. I'm using windows7