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: Apple mac pro trackpad.
- 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: Apple session key.
Apple says the new MacOS Big Sur update is its biggest design change in almost 20 years. The refreshed operating system for Mac computers includes a big update to the web browser, more privacy. The history of macOS, Apple's current Mac operating system originally named Mac OS X until 2012 and then OS X until 2016, began with the company's project to replace its 'classic' Mac OS. That system, up to and including its final release Mac OS 9, was a direct descendant of the operating system Apple had used in its Macintosh computers since. Online shopping for Mac Operating Systems from a great selection at Software Store. Os X for Apple Macbook 2.0 Ghz Core 2 Duo ONLY Old Version 2007. Do apple laptops have microsoft office. OS X Mavericks is the tenth major release of Apple's operating system (OS), and includes features new to the Mac such as iBooks and Maps. Other features included in the new OS include iCloud. Online shopping for Mac Operating Systems from a great selection at Software Store. Os X for Apple Macbook 2.0 Ghz Core 2 Duo ONLY Old Version 2007. Unknown Platform. $24.98 (3 open box & new offers) Virtual PC 3.0 for Power Mac (upgrade to Windows 98) PC/Mac.
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
Mac Os Operating System History
Apple Mac Operating Systems List
- To restore a Time Machine backup that was created on a different Mac, use Migration Assistant.
