Many Mac users have to reinstall Sierra on their computer machine system to fix some common issues such as Macbook overheating because of Sierra and a lot more.
To fix this kind of issue on Mac OS X that occurring due to Sierra you’ve to reinstall Sierra on your Macbook system.
But, the main issue lots of time when you reinstall macOS Sierra from your MacBook you’ve to erase drive storage. But there is a way from which you can easily reinstall sierra without erasing the drive.
Re-Installing Sierra Without Erasing Drive
To reinstall Sierra from Macbook OS X without erasing drive storage or sierra data you’ve to follow up below-step guides.
Note: Before Doing Anything Please Backup
Step 1 :
Restart the computer. Immediately after the chime hold down the Command and R keys until the Utility Menu appears.
Step 2 :
Select Disk Utility and click on the Continue button.
Step 3 :
Select the indented ( Macintosh HD) volume entry from the side list.
Step 4 :
Click on the First Aid icon in the toolbar. Wait until the Done button activates, then click on it.
Step 5 :
Quit Disk Utility and return to the Utility Menu.
Step 6 :
Select Reinstall OS X and click on the Continue button.