Different Mac Os
Apple Mac Operating System Download

If you try to start up your Mac from a hard disk, network volume or Time Machine backup that contains an incompatible version or build of macOS, you might experience one or more of these symptoms:

So no one with an x86 PC can use Mac OS X in future, this operating system shall be only operational with mainboards and chip sets of Apple mentioned as Mactel systems. Mac computers and Mac OS shall remain inseparable. Mac OS X 10.3 is used by approx. 14 million users. Mac OS X 10.5 (leopard) shall appear at the end of 2006. Mac OS is a series of graphical user interface-based operating systems developed by Apple Inc. For their Macintosh line of computer systems. Top Industries that use Mac OS Looking at Mac OS customers by industry, we find that Computer Software (19%) and Information Technology and Services (8%) are the largest segments.

Your Mac doesn't finish starting up, or displays a prohibitory symbol at startup.
You see a message that you're using an unsupported or incorrect version of the Mac operating system.
Your Mac doesn't respond to your trackpad, mouse or keyboard.
Apps unexpectedly quit.
Your Mac doesn't sleep or wake.
You don't hear any sound from your Mac.
The fans in your Mac are louder, because they're spinning faster.
The image on your display appears to shrink, has black bars around it or appears tinted.
You can't use Bluetooth or Wi-Fi.

Which Mac operating systems are compatible?

The version of macOS that came with your Mac is the earliest version compatible with that Mac.To find out whether your Mac is compatible with a later version of macOS, check the system requirements:

Different Mac Os

If your Mac won't start up from a compatible version of macOS, it might require a specific build of that version. To get the correct build, reinstall macOS or upgrade to a later version of macOS.

Learn more

Apple Mac Operating System Download

To restore a Time Machine backup that was created on a different Mac, use Migration Assistant.

List Of Operating Systems For Apple Mac