My hard drive on my Macintosh Performa 640CD has a 4.3 gig hard drive. The first partition somehow got locked and I can't do ANYTHING. It won't let me rename, delete, copy onto, install any software, ect... from it. I would appreciate ANY help that anyone may be able to help. NOTE: My system is a 68LC040 processor, 52mb RAM, 4.3gig hard drive, and OS 8.1.