Trying to do a clean install of Mavericks. I erased my HD and had to re-download Mavericks and after finally finishing, it gets 10 minutes into the install before I get an "Installation Fail" "OS X can not be installed on this computer" then prompts me to restart. What the heck! What I don't understand is I've done this exact same process with Mountain Lion and had no problems. It's an older MacBook Pro that came shipped with Leopard. I don't have the original discs that came with it (not like it'd work anyway since my drive ejects anything I put in it) and I've done a disc repair on the HD and everything is fine with it. How do I get this working? Or get ANY software on it? I can't afford the time it took to erase the HD and re-download Mavericks, again, so that's out of the question. I don't have another Mac I could download the software onto and make a bootable drive out of. And there's no Apple Store anywhere near me. What should I do?