I had one HD with Win7 64Bit. I installed a 32Bit version on a second HD. Before installation I did not remove the first drive. Currently MBR is on the first drive and I can't use the system without that drive. I need to wipe that drive so I can use it for Ubuntu. Question is how do I fix or create an MBR on the new (32Bit) installation? Is it anything like in WinXP? I would try, but I don't want to screw anything up and be left with nothing. Rather be sure than sorry (again). Thanks. Regards.