If you’re experiencing issues with your Mac and are looking to reinstall Mountain Lion, the process is fairly straightforward. First, start your computer and hold down the Command and R keys. This will take you to the OS X Utilities menu, where you can restore from a Time Machine backup or repair or erase your hard drive.
To install a clean system, select “Reinstall OS X” and click “Continue.” You’ll be presented with all the hard drives connected to your device. Choose the hard drive you want to use and click “Erase” to wipe it clean. Then, create a new partition and click “Erase” again to finalize the partition.
Next, go back out and reinstall from the internet. This will download all the necessary components, which may take some time. Agree to the terms and conditions, select the partition you just created, and the computer will start to download new edition components.
Once the process has finished, the computer will restart and you’ll be prompted with a welcome screen. Select your location and keyboard layout, and if you want to transfer information, connect your backup hard drive. If not, click “Continue” and agree to the terms and conditions.
To create your account, type in “admin” for the account name and leave the password blank or create one if you prefer. Click “Continue” and your account will be created.
Finally, take the time to customize your desktop and settings, and you’re good to go.
Reinstalling Mountain Lion may seem daunting, but by following these simple steps, you can have a clean system in no time.