I had my macbook pro with OS Mountain Lion as for being a developer just to have iOS 8 early lol and im learning how to program last night my computer crashed and I had to reinstall operating system when I put my old CD it says
PS: I installed the new beta Yosemite I had this problem before but forgot how to fix it
with same OS 10.10
PS: I installed the new beta Yosemite I had this problem before but forgot how to fix it