Well one day we installed Windows and it hasn't installed c ompletly so I wanted to get rid of it but I couldn't and the "hard drive" or the area that ahs window son it is there but it is invisable. Even making it visable using onyx did not work. I tired disk utility and that wouldn't work either. How can I erase the useless windows part? I wanted to get more space on my hard drive and I wanted to reinstall it some other time from the start. Thanks so much in advance.