Does my operating system come pre-installed?

Does my operating system come pre-installed?

Ali Nasri (Computer Specialist, Mac 911 Inc.) gives expert video advice on: What extra software will I need to buy?; How do I know if the software with my new computer is legal software? and more...

The operating systems come preinstalled from the manufacturers on your computer, but they'll provide you with disks in case you need to reinstall that system. So, the disks that come with the computer don't need to be installed at that time; it's already pre-installed on your computer, but you just have it there as a backup.