I've been trying for hours to remove Ubuntu which is the only OS on my laptop. I don't have a Windows installation there. I've followed various bits of help, including trying to get boot-repair to work (I just get error messages when I try to run the recommended commands).
Please can someone tell me how to get rid of Ubuntu? It won't recognize my .iso copy of Windows - tries to read the DVD and then just boots Ubuntu anyway. The DVD is fine - I can use it on other computers and it's perfectly OK.