And Sidecar, which lets you use iPad as a second Mac display.

Then, if your Mac is running OS X Mavericks 10.9 or later, you can upgrade directly to macOS Catalina.

Click Upgrade Now and follow the onscreen instructions to begin your upgrade.

If you dont have broadband access, you can upgrade your Mac at any Apple Store.

If upgrading from an earlier release, macOS Catalina requires up to 18.5GB of available storage.

I didnt because I would prefer upgrade the Lion partition and keep safe Mountain Lion in case of trouble with the new OS.

Your computer must meet the requirements to run Mountain Lion.

OS X Mountain Lion - System Requirements Macs that can be upgraded to OS X Mountain Lion 1.

MacBook (Late 2008 Aluminum, or Early 2009 or newer) - Model Identifier 5,1 or later 3.

MacBook Pro (MidLate 2007 or newer) - Model Identifier 3,1 or later 4.

MacBook Air (Late 2008 or newer) - Model Identifier 2,1 or later 5.

Mac mini (Early 2009 or newer) - Model Identifier 3,1 or later 6.

Mac Pro (Early 2008 or newer) - Model Identifier 3,1 or later 7.

Xserve (Early 2009) - Model Identifier 3,1 or later To find the model identifier open System Profiler in the Utilities folder.

Now I wish I would have investigated slightly more before asking the question.

I am running a 2011 MBP with Lion so it should not be a problem.

I have not updated to Mountain Lion and would like to get Mavericks without having to purchase ML.

So you are saying this is possible I have a 17 MBPro, early 2009 running Lion.

Os X Lion To Mavericks Download Any Later

Presumably, you can download any later OS using Snow Leopard as long as your Mac hardware is compatible.

On Mountain Lion, Software Update was asking to Upgrade to Mavericks.

How To Upgrade Os X Lion To Mavericks For Free