Clear data, Means Reset mac to factory settings very essential action before sell your used Mac running on High Sierra, Sierra, OS X EI Capitan, here. You can also follow the same process you have to follow on an older OS X Version (Yosemite, Mavericks, Lion). No any single change for iMac, MacBook, MacBook Pro, MacBook Air and Mac Mini. Without any third party, Mac cleaner Software or Factory reset Applications, you can erase data, Settings and Saved History on App store, Browsers, Notes delete completely with Mac to factory setting.
Note: Factory reset to make your Mac fresh like new purchase if you are tolerating with the freeze, Corrupted OS X, Auto close apps, Battery Drains and Network Problem.
After Factory reset you can reinstall the latest version of OS X online for your Mac’s Edition, Automatically. You can’t install or choose the option for downgraded OS X version.
Steps for Reset Mac to Factory Settings or Clean Mac for Sell
Step 1: Restart your Mac OS X, That you want factory reset. After a second, Press Command + R from your keyboard, until you will see OS X Utility window on Screen.
Step 2: Next, Select Disk Utility and Click on continue button.
Step 3: Choose you startup disk and erase that with Erase option. It will erase your drive completely. Mind that your disk format type must be “Mac OS Extended (Journaled)“.
Step 4: Set your disk startup name and again go with Erase button.
Last, Complete factory reset you need to install latest OS X, by reinstalling from start up screen.
When your Mac turn on, Without OS X installed your screen must be disk utility.
There, You have to go with Re install OS X, then Continue.
Follow on screen easy instruction for OS X install after Reset mac to factory settings. I am sure about that, You never stuck with the stop process in between. However, you get any problem check your internet connectivity. All is fine, Then share with me on the comment section.