

Check whether Mac system connected to the internet or not, if not then connect it.The first and the foremost thing that you have to do before erasing El Capitan is to take a backup of Mac data using Time Machine. Plugin-> reboot-> hold down the Option key, that’s it you can able to enjoy your earlier version. Note - Before uninstalling El Capitan, if you made a bootable OS X Yosemite install drive, then it is just a 3 step process. It includes all information about how to uninstall OS X El Capitan and reinstall OS X Yosemite, and also how to restore data from Time Machine after reinstalling Yosemite. But the problem is how to do that? Here we are providing a detailed description of how to downgrade from El Capitan to Yosemite in simple steps. In such cases, they may want to downgrade back to Mac Yosemite.

Some people are happy with these new versions, whereas some people are unhappy as this new OS fails to reach their expectations. Apple has come up with new versions of operating system known as Mac OS X El Capitan, Catalina, Mojave, etc.
