Hello people, I had to erase the disk on my MacBook Pro and install Yosemite from Apple site, but after installation finished I received this message: "OS X could not be installed on your computer. A mismatch between the MBR and GPT partition maps is not supported with this operation. Quit the installer to restart your computer and try again." When I restart I get the same result. I don't understand it. I read somewhere that it may have something to do with resizing partitions after installing Bootcamp. If so then the damage is already done! But how can I turn around this problem? Hope you can help. Lee PS: I don't have the system CD anymore.