![]() When your Mac finishes starting up, you might want to open System Preferences and adjust any settings that were reset, such as sound volume, display resolution, startup disk selection, or time zone. To reset NVRAM, first turn off the firmware password. If your Mac is using a, this key combination does nothing or causes your Mac to start up from. On, you can release the keys after the Apple logo appears and disappears for the second time.After Resetting the PRAM or NVRAM Once your Mac finishes starting, you can use the System Preferences to set the time zone, set the date and time, select the startup volume, and configure any display options you wish to use. If you're having some issues with your Mac, planning to sell it, or passing it on to a relative, you're going to want to know how to wipe your Mac and reset it to factory settings.
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