How To Reinstall Mac Os X

There are a few reasons why you might want to reinstall macos or even mac os x.

How to reinstall mac os x. Perhaps your mac is working erratically and you think that a clean install of the operating system might fix the. All you need is a connection to the internet. These discs are available for os x snow leopard os x lion and os x mountain lion. But they re also what you do if something really bad happens to the copy of os x that you boot your mac from or if the version of os x on your mac is earlier than 10 10 el.

How to reinstall os x lion. Thanks for the quick reply grant. If a wireless network is available you can choose it from the wi fi menu which is also available in macos recovery. When you need to reinstall macos on your mac you can install it 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.

If you booted from a functioning recovery partition click the reinstall macos button. Macos recovery makes it easy to reinstall the mac operating system even if you need to erase your startup disk first. If you re unable to use internet recovery mode or create a bootable usb installer you can still use a mac os x installation disc. Reinstall mac os x without losing data when you get the macos utilities window on the screen you can just click on the reinstall macos option to proceed.

Both ways of reinstalling keep your files and user settings intact. If you booted from an usb disk click continue to advance to the installer. It s a good idea to back up the mac with time machine before beginning this process. Reinstalling os x system software on a mac with recovery mode.

The installation process will begin. I can get into the recovery console with os x utilities and i can click on reinstall os x. The following instructions do triple duty. A confirmation message will appear informing you about the reinstallation details.

Of course they re what you do to install os x for the first time on a mac or a freshly formatted hard or solid state disk. With the release of the os x lion operating system for mac computers apple ceased traditional distribution of physical retail discs and instead offered the os as a download via the mac app store. Once i click continue i get the popup that says to download or restore your os x your computer s eligibility will be verified with apple. Even though this method aims to only reinstall os x system software on the mac things could still go wrong and it s always better to lean on the side of caution and make file backups beforehand.

If your mac is from 2012 or earlier there was an installation disc in the original box.