Is your Mac up to date with the latest version of the Mac operating system? Is it using the version required by some product that you want to use with your Mac? Which versions are earlier (older) or later (newer, more recent)? To find out, learn which version is installed now.

1. El Capitan To Catalina Upgrade
2. Can I Upgrade From El Capitan To Catalina

• The installation is complete, but the drive isn't bootable yet. Boot from the USB again, this time choosing El Capitan. Turn on the computer 2. Press the hotkey to choose boot device 3. At the Boot Screen, choose your new El Capitan installation. Complete OS X El Capitan setup.
• Apple’s Mac OS X El Capitan is a free update that has further simplified the OS X experience by featuring the upgraded performance, security, and convenience. With this twelfth main release of OS X after Yosemite and Mavericks, the Mac-based ecosystem got further tighter than ever before.

Use About This Mac to see the version of Mac operating system installed on your Mac, and find out whether it's the latest version.

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 should see the macOS name, such as macOS Big Sur, followed by its version number. If you need to know the build number as well, click the version number to see it.

Which macOS version is the latest?

El Capitan To Catalina Upgrade

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 Big Sur. 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 that are installed by macOS, such as Safari, Books, Messages, Mail, Music, Calendar, and Photos.

Can I Upgrade From El Capitan To Catalina