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Mac OS X barely bothers us with problems but when it does it will take long process to resolve it. This may push you to decide on erasing and reinstalling the OS.

Erasing and reinstalling Mac OS X is not that hard as it seems to be. You only need to pay attention and be alert during installation because a little mistake can result to another problem. 

This article is a step-by-step guide on how to erase and reinstall your Mac OS X in Recovery Mode, make sure you've backed up your personal data because all data will be erased.

Follow the steps below:

1. The first thing to do is to start or boot your Mac into recovery mode. So if you don't know how you can read this article : How to Start Mac in Recovery Mode.

2. Now in the Recovery Mode, click on Disk Utility and then click on Continue.

3. Now from the left, select the volume which has Mac OS X installed. 

4. Then click on Erase tab.




5. Then in the Format menu, select Mac OS Extended (Journaled). 

6. Name the volume with whatever you wish and then click on Erase.



7. After the process of erasing disk is completed, select Disk Utility and select Quit Disk Utility.

8. Then click on Reinstall OS X and click on Continue.



Then the setup process for reinstalling OS X will commence. If you reach the stage where you will select disk, choose the one which you erase in the above process. You may also be required to authenticate with your Apple ID, so make sure you have a working internet connection. All you have to do is to follow the on-screen instructions and wait till the reinstalling process is completed.

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