A little bit of information about Macintosh...
The Apple Macintosh is a type of computer that has been around since January 1984. The people who designed the Macintosh and its operating system wanted computers to be easier to use, and were inspired by an experimental computer some of them saw at a Xerox laboratory.
The Macintosh was the first mass-produced computer to use what engineers call a graphical user interface, or "GUI." The computer you are using right now probably uses a GUI. This means that every item stored in the boot device or any other disk on the system can be seen somewhere as a little picture, or icon.
The major difference that the Macintosh has with other computers is that its processor is built by Motorola or IBM according to Apple's specifications (whereas other personal computers have processors made by Intel or AMD). The Macintosh cannot run Windows programs unless special software is installed that allows it to understand the Windows operating system.
Besides Mac OS, a modern Macintosh can run other operating systems, such as:
In fact, the latest version of Mac OS is based on Unix. OS X will only run on a G3 or later chipset.