Reinstalling Mac OS X can seem daunting, but it's actually a relatively painless and wonderfully effective troubleshooting tool.

There are many reasons to reinstall macOS. It fixes errors and wipes your Mac in case you want to sell it. Here's how to do it.

If you experience issues running macOS Big Sur on your M1 MacBook Air, M1 MacBook Pro, or M1 Mac mini, or you want to start afresh with a new ...

If you see a prohibitory symbol at a startup disk, installed an older version of the OS X inadvertently or if you have erased the startup disk, you might consider reinstalling OS X on your Mac ...

Some new Mac computers aren't allowing users to reinstall OS X Mountain Lion. Find out the cause of this issue and how you can fix it.

Apple macOS Sierra: How to reinstall the Mac operating system Check out the instruction guide to reinstall macOS Sierra.

This detailed walkthrough covers how to revive and restore M1 Macs, what the difference is between them, and how to know which one to do.

If you ever need to restore the entire contents of an OS X Lion startup drive, or just perform a reinstall of the OS, you’ll find that there are numerous ways to accomplish these tasks. In fact ...

Reinstall Mavericks. Go to the App Store to install all the available updates. Go to the App Store to reinstall the bundled software that came with the system (iWork and Server).