Is your Mac up to date with the latest version of the Mac operating system (macOS or OS X)? Is it using the version required by some product or feature? Which versions are earlier (older) or later (newer, more recent) than the version currently installed? To find out, learn which version is installed now. How to get os x lion for free.

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Download the Application from the Mac App Store using your Apple ID on any Mac or functional computer running Mac OS X 10.6.8 or later. Step One: Configure the BIOS Advertisement. Oct 10, 2014 BIOS/UEFI Post Installation. Mac OS X Support Mac Software. The only setting that i dont see as per your post is the Series 9 fix for Audio but i just assumed.

Apr 01, 2020  If your Mac is using a firmware password, you're prompted to enter the password. Option-Command-P-R: Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery. Shift (⇧): Start up in safe mode. Disabled when using a firmware password. D: Start up to the Apple Diagnostics. Oct 24, 2018  Setting everything up. If you have an Intel PC and have downloaded the files above, we can get started. The Mac OS X download is around 6GB so if you haven’t gotten it already, you might want to start the download ahead of time. Jan 22, 2015 This is a video on how to perform a factory restore on a Macbook A1278 running Mac OS X Steps 1. Power off the Macbook 2. Power it on and hold 'Command' key and 'S' key at the same time.

If your macOS isn't up to date, you may be able to update to a later version.

Which macOS version is installed?

From the Apple menu  in the corner of your screen, choose About This Mac. You'll see the macOS name, such as macOS Mojave, followed by its version number. If some product or feature requires you to know the build number as well, click the version number to see it.

This example shows macOS Catalina version 10.15 build 19A583.

Which macOS version is the latest?

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These are all Mac operating systems, starting with the most recent. When a major new macOS is released, it gets a new name, such as macOS Catalina. And as updates that change the macOS version number become available, this article is updated to show the latest version of that macOS.

If your Mac is using an earlier version of any Mac operating system, you should install the latest Apple software updates, which can include important security updates and updates for the apps installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

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Bios Setting For Macos On Pc

Learn more

• Always use the macOS that came with your Mac, or a compatible newer version.
• Learn how to reinstall macOS from macOS Recovery.