Unlike other operating systems, Mac OS X will never install system and application updates without your authorization.
(The one exception to this is the security definition updates described in the next section - if you have that option enabled.) To actually update the system software and Apple application, you have to press the Install button yourself.
We also cover how to update your Mac with the more minor updates to the operating system that Apple issues throughout the year at the bottom of this article.
This is best for when you want to not see the Notification reminder for a full day.
The primary downside to this approach is that it temporarily disables all notifications, not just Software Update.
These OS versions can upgrade to Sierra: Disk space: 8 GB of free space on drive.
In the same About this Mac menu select "Storage" tab.
In front of the multi-colored bar, you will see the phrase, "X. XX GB." If you don't have at least 8 GB of free space, you should delete some old files.
Before you update Mac OS, don’t forget to: Clean up your Mac This is essential if you want a fast and effortless update, and glitchless work of your new mac OS. To give your Mac a cleanup, you need to get rid of system junk, uninstall extra apps, and clean some old caches.The new OS X 10.12, or rather mac OS upgrade is at the door and it’s full of amazing features you’ll probably want on your Mac right away.Let’s take a quick look at what’s going to be the best among the news in mac OS Sierra. This is great news for everyone who’s already used to her help on i OS.The first thing you will want to do is find out exactly which version of the Mac operating system to install and make sure that there is no reason not to install it.You can read all about the latest version of Mac OS, along with details of the latest point updates and any known issues, here: Mac OS Sierra latest news: current version, updates, betas, and new features.But it's much easier to simply automate the process and have Software Update notify you when it's found updates.