News OS X Lion and Mountain Lion are no longer in the Apple Store Apple stops selling the OS X Lion and Mountain Lion in its online store. By Roman Loyola Senior Editor, Macworld NOV 14, 2023 12: ...

Mac OS 9 was the last classic OS before Apple transitioned into the OS X series with a brand-new Unix-like system. When Apple introduced OS X.2 Jaguar at WWDC in 2002, Steve Jobs held a funeral ...

Shut down the target Mac (the one on which you would like to install Mac OS X 10.4) Connect the target Mac to another system with a DVD drive running Mac OS X, using a standard FireWire cable.