
Note: Depending how old your Mac is, you may get an older version of the installer-typically the one that originally shipped on your Mac (That's especially true if you end up in Internet Recovery mode). When you're done, your Mac will reboot into OS X Yosemite.

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How to restore your data from Time Machine.If not, you'll need to erase OS X El Capitan first, and then re-install. If you made a bootable OS X Yosemite install drive before you went on the El Capitan beta, then simply plug it in, reboot, hold down the Option key, and you'll be on your way. Note: If you're reading this article on the Mac you want to revert, either print it out first, or open it on iPhone, iPad, or another Mac so you can read along as you go.

Don't worry, though, we'll walk you through it! Downgrading is a simple process, but it's also a bit of a chore. If it turns out you don't enjoy the process, or would prefer to wait and try again later, you can go back to OS X Yosemite.

The OS X El Capitan public beta is a way to test the next generation of Mac software.
