You need to have the MacBook start in Recovery. Restart while holding down Command and the 'R' key until you see the Apple logo. After successfully booting into Recovery, you will be presented with options, including the one you need.
Take a look at the video below, which will walk you through factory resetting your MacBook.
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Applications get erased when you do a factory reset.
No, even if you factory reset the Galaxy S4 it will not downgrade.
The amount of RAM that is factory installed in a MacBook depends on the model of MacBook. In the latest models (May 2013), the 11 and 13-inch MacBook Airs have 4GB of 1600MHz DDR3L memory factory-installed, and the 13 and 15-inch MacBook Pros 4GB of 1600MHz DDR3 memory, all four models being configurable to 8GB. The 13 and 15-inch MacBook Pros with retina display, however, have 8GB of 1600MHz DDR3L memory factory-installed, this configurable to 16GB.
If you do a factory reset then yes you will loose everything.
To reset your Galaxy S3, you simply need to: Launch settings, Open "Backup and reset," and tap "Factory data reset" to reset your galaxy s3 to its original factory settings.
Resetting a rooted phone back to factory setting can be easy. All you have to do is go to the settings and click on the factory reset.
Chrysler does not have reset buttons. The factory alarm is reset by unlocking the doors with a key or remote.
Resetting a phone back to the factory settings is easy. All you have to do is go into the settings, click on reset and the click on the factory setting.