Long story short. I have a decent PC in the other room that has no internet. So I want to install Linux/ubuntu onto a external 1.5TB hard drive so I can run the other PC on it. How ever, I do not want Linux/Ubuntu to effect this PC at all. Please help.
PS: in case you cant tell, I have no idea what Im doing. I am computer friendly however I am very unfamiliar with Linux/ubuntu. Im not even sure I know what it is. I just cant afford to buy windows 7.