reinstalling operating system
What is the best way to reinstalling operating programs
MacBook Pro 13″, macOS 10.13
You can enter ➔ macOS Recovery Mode and reinstall the macOS .
As you will see in the link above, you may choose to only reinstall the macOS or you can choose to erase all of the contents of your drive and then reinstall the macOS. Please read all of the options. Thanks.
Axel F.