After two Beta builds that only developers who have a paid account on the Apple Developer website had access to, Apple finally decided that it was time to release the first Beta build to the public.
The OS X 10.11 Public Beta was officially announced at the end of this week, and we thought it would be a good idea to write a piece of article with information about how to install it, just in case you are curious to get an early taste of what's coming in "El Capitan" in fall 2015.
It is of the essence to mention here that we're writing the following installation instructions for OS X 10.11 (El Capitan) Public Beta simply because it is not a regular update that you can get through the usual channels and install as an update to OS X 10.10 (Yosemite).
Just like older OS X releases, "El Capitan" is a total replacement for the previous version of Apple's outstanding computer operating system for Macintosh hardware. Therefore, you will have to get the full installer of OS X 10.11 when attempting to upgrade from OS X 10.10.
How to install OS X 10.11 "El Capitan" Public Beta
To install the first Public Beta build of OS X 10.11 "El Capitan," you will have to go to the Apple Beta Software Program website beta.apple . com, sign in with the same Apple ID that you use on your Mac, and read all the information posted on the OS X "El Capitan" Public Beta page, especially the part where you will have to back up all you important data.
You will have to enroll your Mac to get the Public Beta of OS X 10.11, so click the "enroll your Mac" link on the "Getting Started" section beta.apple . com/sp/betaprogram/redemption#osx . You'll be automatically redirected to another page, where you must follow the steps to install "El Capitan." Then, you need to click on the blue "Download the OS X El Capitan Public Beta" button.
The Mac App Store app will open, and your unique redemption code for installing the OS X 10.11 (El Capitan) Public Beta build will be activated automatically and the installer will begin to download in the background. Please note that it has 6GB, and it might take a while, depending on your Internet connection.
You can see the download progress in the Launchpad. When it finishes, the OS X 10.11 Public Beta installer will open, and all you have to do is follow the instructions on the installation wizard to install "El Capitan." After installation, you will be able to update your OS X 10.11 installation when new Public Beta builds are released directly from the Mac App Store.