![]() This cookie is set by GDPR Cookie Consent plugin. The cookie is used to store the user consent for the cookies in the category "Other. The cookies is used to store the user consent for the cookies in the category "Necessary". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Advertisement". These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. When your Mac has finished booting up, enter System Preferences to alter any reset settings, such as speaker volume, display resolution, initial disc selection, or time zone. You can release the keys after the second startup sound.Īfter the Apple logo displays and disappears for the second time on Mac machines with the Apple T2 Security Chip, you can release the keys. After around 20 seconds, you can let go of the keys, though your Mac may appear to restart this is nothing to worry about. Shut down your Mac, then turn it back on while pressing and holding the Option, Command, P, and R keys simultaneously. You may need to reset NVRAM if your Mac starts up from a disc other than the one specified in Startup Disk settings, or if a question mark symbol shows just before your Mac starts up. Resetting NVRAM may assist if you’re having problems with these or other settings. The settings saved in NVRAM are dependent on your Mac and the devices you use with it. Sound volume, display resolution, startup disc selection, time zone, and recent kernel panic information are all settings that can be saved in NVRAM. ![]() PRAM (Parameter RAM) stores similar data, therefore the procedures for resetting both NVRAM and PRAM are identical. NVRAM (nonvolatile random-access memory) is a small amount of memory used by your Mac to save and quickly access certain settings. ![]()
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