Can I install Mavericks if I upgrade my RAM? I have an early 2008 MacBook with 2GB of RAM and I would like to install OS X Mavericks onto it. However, I am not able to install the OS due to the age of my computer. If I upgrade my computer's RAM (to at least 4GB), will I then be able to upgrade to Mavericks?
Short answer....No
If your system is unsupported then you cannot install Mavericks no matter how much memory you have. The problem is with the EFI not the memory.