For example, for OS X 10.9.2, search the page for “OS X 10.9.2 Combo” and then download the disk image, open it, and run the installation package contained in it.
#Install mac os x 10.7.5 install
However, if you would like an intermediary version, then you can download and install the Combo updater for the desired version from Apple’s Support Downloads Web page(). If you simply need the latest version of OS X, then you can use Apple’s software update to get the most recent versions of all Apple-provided software. After restarting, check the version of OS X that was installed, which can be seen in the “About This Mac” panel in the Apple menu. This process should only replace system files on your Mac, leaving user accounts, settings, and installed applications intact. Select “Reinstall OS X” from the tools windowĪfter doing this, follow the on-screen instructions to download and reinstall OS X.Release the keys when you see the Apple logo and spinning wheel.Hold down the Command-R keys when you hear the boot chimes.Therefore, to reinstall OS X, you just need an active network connection, and then follow this procedure: Starting with Lion, Apple has made OS X available for reinstallation online through the use of the OS X Recovery partition.
Choosing the second option in the main OS X Utilities window will allow you to reinstall OS X (click for larger view).