
When you reinstall macOS from Recovery, you will not lose any data if you don’t erase your main drive.

In this article, we will show you how to reinstall macOS on a Mac without losing any data.Īlso see: How to find out when macOS was last reinstalled on your Mac Reinstall macOS without losing data However, some people don’t do it worrying that they will lose all their, files, documents, or data in the reinstall process. There could be several other reasons why you may want to reinstall macOS on your Mac. If your Mac is not performing as expected, or is showing signs of slowing down, you could reinstall macOS to improve things.
