In 1984 when the Macintosh Was Introduced
I have a Mac OS X but I know Mac OS is a computer made by the brand/company, Apple.
Mac OS stands for Macintosh operating system, which is the software that runs on Mac computers made by Apple.
Apple's Mac OS X can legally only be used on a computer made by Apple.
legally, only apple made computers, but there are "hackintoshes", pcs that use MAC OS X
Legally Mac OS X can only be installed on computers made by Apple. Some people have had success installing it on other computers.
Mac OS X is an excellent replacement for Windows 7. You can use Apple's Mac OS X on computers made by Apple. The legal terms you agree to when installing Mac OS X prevent it being installed on non-Apple computers.
Ones made by apple.
Mac OS
Providing the Intel based computer is manufactured by Apple then their Mac OS X software can work on it. The Mac OS X user's licensing agreement prevents Mac OS X being used on computers that are not made by Apple.
Linux Ubuntu and Apple Mac OS
Mac OS X is one of the major releases of operating systems from Apple Inc. It features a low level Mach_kernel, underlying Unix OS, a 3D graphical user interface. Mac OS X can only be installed on computers made by Apple Inc. Recent versions of Mac OS X include: Mac OS X 10.3 Panther, Mac OS X 10.4 Tiger, Mac OS X 10.5 Leopard, Mac OS X 10.6 Snow Leopard. Starting in Mac OS 10.5 an automatic backup utility called Time Machine is available. The current version is Mac OS X 10.10 and an early release version of Mac OS X 10.11 is available to install.
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.