How to reinstall Mac OS X using Recovery mode

How to reinstall Mac OS X using Recovery mode

Apple Mac computers are reliable machines but in rare circumstances you may need to reinstall the operating system. Fortunately OS X comes with an emergency repair system called OS X Recovery (available on all Macs running or Later). In OS X Recovery mode you connect the Mac to the internet and download the OS X operating system.

This enables a Mac to restore OS X without needing the installation disks (which is handy, as most Mac computers don't come with optical drives any more). See also: You can do more than just install Mac OS X using Recovery mode.

The Apple support website lists four possible uses for OS X Recovery: In this feature we are going to look at how to use Internet Recovery mode to reinstall OS X on your Mac, but if you're troubleshooting a broken Mac it's worth using Disk Utility to see if you can fix the problem first. You access recovery mode by holding down the Command ( ) and R keys during startup. Follow these steps to boot into OS X Recovery: The Mac will now start in OS X Recovery mode.

To reinstall Mac OS X using Recovery mode you have to connect to the internet. Follow these steps to connect to the internet in OS X Recovery mode: OS X Recovery mode should now be connected to the internet and can download the OS X installation software. You will now be able to download OS X and reinstall it on your Mac. Note that it is a large file and will take a while to download. The speed of this process is of course dependent on your broadband connection: it's unadvisable to download OS X using a non-broadband connection.

You will also need your Apple ID and password to install OS X from the App Store. Click Install Mac OS X and Continue in the OS X Utilities section of the screen to begin the installation process. Follow the on-screen instructions to reinstall OS X.