I had a 6gb .iso game (portal 2). To transfer it to other pc i splited it into 4.7 gb files using win rar. Resulting in two rar files one of 4 gb and other of 2 gb.so i burnt both on 4.7 gb DVD . To get back single 6 gb .iso file i need to unrar both the splited file together.so i can neither...