Download original Yosemite.DMG - Mac OS X 10.10 without Apple ID here.
Every bit as powerful as it looks. An elegant design that feels entirely fresh, yet inherently familiar. The apps you use every day, enhanced with new features. And a completely new relationship between your Mac and iOS devices. OS X Yosemite changes how you see your Mac. And what you can do with it. Upgrade for free at the Mac App Store.