Don’t Want to Update your Mac to OS X Yosemite? Hide the Update from the App Store

[amazinghorse]

While many Mac users have updated to OS X Yosemite, a notable amount have chosen to stay on OS X Mavericks or Mountain Lion for a variety of reasons, and some have even had to downgrade due to frustrations or incompatibilities that were experienced with the new version of OS X. Whatever the reason, if you’re wanting to stick on a previous version of OS X that you are happy with, you should probably hide the Yosemite update so that you don’t accidentally install it.

Choosing to hide the Yosemite update also makes the rather large OS X Yosemite banner disappear from the App Store on your Mac, which makes it easier to see your other app updates again, and it also makes it so the large banner is no longer taking up most of the “Updates†screen in the Mac App Store.

This is not permanent, and it can be reversed at any time if you change your mind.

Hiding the OS X Yosemite update installer from the Mac App Store is really easy

• Open the App Store as usual in OS X, then visit the “Updates†tab
• Right-click (or control+click) on the large OS X Yosemite banner and choose “Hide Updateâ€

 
By the way, if you’re holding out with an older version of iTunes or a prior version of any other app, you can repeat the same process for hiding the newer versions of those app updates as well.
Once the update has been hidden, the large blue OS X Yosemite banner disappears and you’ll get a normal view of the App Store again from the Updates tab:


 
This will not impact future updates that become available to the currently installed and running version of OS X (unless you specifically hid those as well). For example, if you’re running OS X Mavericks and want to stay with 10.9.5, and you choose to hide the OS X Yosemite update, the Mac App Store will continue to show all forms of updates if and when they become available to the active OS X version.
Hiding a major OS release like this works the same way as you would hide and unhide any update that’s available in the Mac App Store, even if it’s just for another app.
This should also stop the nagging software update notifications from popping up to advertise the OS X Yosemite update as being available, though you may want to take that a step further and either disable the App Store notifications, or at least turn them off temporarily if it does pop up again.
And yes, as previously mentioned, this can be reversed. If you decide later that you do want to install OS X Yosemite, perhaps after OS X 10.10.2 is released, a particular bug or issue that bothered you is resolved, or maybe after an essential app you rely on has been updated to insure compatibility, you can always choose to download the OS X Yosemite system update from the Purchases tab again, which will begin the installation process when finished. As always, back up your Mac before installing any system updates.

 

http://osxdaily.com/2014/11/23/hide-os-x-yosemite-update-mac-app-store/