Mac operating system is very important for Mac to work. This is the default inbuilt by the manufacturer when purchased. Reinstall MAC operating system is simple and you have two methods to go with so, whichever suits you choose:

One of them installed from Apple using the internet or you can install it from the recovery partition included on the hard drive or flash storage of every Mac. Don’t worry it will keep all your files and user settings intact.
Firstly, check whether you are connected to the internet.
Call 1-888-272-9xxx Toll-free
Now, on your mac choose the Apple menu and then click Restart.
Then, choose any one of the convenient methods for the job.
Select the Reinstall Operating System.
- Install the latest version of macOS from the internet. Ensure you are installing the latest version of the operating system.
- Reinstall your computer’s original version of macOS from the internet, including any versions of any updates of the system.
- Reinstall macOS from the built-in recovery disk on your computer
Now, click continue. You will have to follow the onscreen instructions and click finish at the end.
There is another method of recovery for reinstalling the Mac Operating system. Depending upon your required version.
If you don’t want to have updates then click Command + R
To install the latest version installed on your Mac Option Command R – this will upgrade you to the latest macOS compatible with your Mac for the latest version.
Shift Option Command R will install the version of macOS that came with your Mac, or the one closest to it that is still available.
Now, let us see how to reinstall the Mac Operating system without disc usage.
Reinstall the Mac Operating system without disc usage
Before going with the reinstallation, check if your mac is completely charged and is enough for the entire process. Also, check if your Mac is connected to the internet throughout the process.
- Now, Turn on your Mac, while holding the CMD + R keys down
- Select “Disk Utility” and click on “Continue”.
- Elect the startup disk and go to the “Erase” Tab.
- Select the Mac OS Extended, give a name to your disk and click on “Erase”.
- Disk Utility and then Quit Disk Utility.
- Re-install MacOSX: click on “Reinstall Mac OS X” and then click on “Continue”.
- Follow the on-screen instructions.
This is the method for Reinstalling the Mac Operating system without the usage of the disc.
Now, let us see how to install the Mac Operating system high sierra.
Firstly, this is the extended feature of Apple in the Mac operating system which offers new features such as apple file settings, new features in photos, videos and many more apps updated versions.
So, this is an amazing feature and let us follow how to reinstall Mac Operating system high sierra.
Steps To Reinstall Mac Operating System High Sierra
- Back up your Mac before you begin as this is very important or else you will lose all your data.
- Click the Apple icon in the top left corner of your screen and choose Restart from the menu.
- Use the combination of Command and R keys; you’ll see the macOS utility window.
- Pick Reinstall macOS.
- Click Continue.
- Select your hard drive (this is usually Macintosh HD).
- Click Install and complete the process.
Now, you have reinstalled the Mac operating system high sierra.