The eMacs were discontinued in 2006. The earlier versions with a G4 processor running at less than 1GHz can run Mac OS X 10.4 (Tiger). The later versions with a G4 Processor running faster than 1GHz can run Mac OS X 10.5 (Leopard). Select About this Mac from the Apple menu (top left) to determine the speed of the processor.
Mac OS X 10.5 (Leopard)
It's a Mac Os X Lion.
The latest version of Mac OS X is 10.7.2 known as Lion
Osx snow leopard I think ^^^^Thats wrong the answer is OS X Lion :)
Yes, you can upgrade to Lion from any iMac that uses the Intel processor. But the newest OS is Mountain Lion.
I have a Mac OS X but I know Mac OS is a computer made by the brand/company, Apple.
You cannot without erasing your hard drive and installing Mac OS 9 from scratch. Even then Mac OS 9 may not run on modern Mac hardware because Mac OS 9 needs the ROM chip to boot. Modern Mac OS X hardware uses EFI to boot the system instead of a ROM chip to boot. Mac OS X v10.0 - Mac OS X v10.4 support Mac OS 9 applications and can run them, you just need to install the Mac OS 9 compatibility program which can be found on the Mac OS X Install CD.
The second name of Mac OS X v10.4.5 is Mac OS X v10.4 Intel.Mac OS X 10.4 was known as Mac OS X Tiger.
Mac "Lion" and Mac "Snow Leopard" refer to iterations of Apple's Mac OS X (operating system, version 10). "Lion" is the newest as of this writing, and is version 10.7, while "Snow Leopard" is its immediate predecessor, and is version 10.6.
Linux (ubuntu 10.10 and higher) and mac OS x (newest version) because they're the fastest best looking and simplest.
Apple's Mac OS X 10.5 Leopard was released on October 26, 2007.
The oldest mac OS is System 1