What to know before updating to lion
Now we'll take a quick look at the legendary mac OS Sierra upgrade.
This one is really going to be up to the specific user to decide, but if you like your Mac the way it runs now, it’s not a big deal to stay where you are.
Another approach for those hesitant to jump ship to a new system software update is to wait for the first point release, in this case, OS X 10.11.1 El Capitan.
That point release update is already in beta, and will likely be finalized over the coming weeks/months as various bugs are patched and refinements are made to OS X 10.11.
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.