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Macbook pro shutdown shortcut9/14/2023 When you hear the second start-up tone (or, on a Mac Pro, see a second Apple logo appear and disappear), you can release the keys and let the computer finish its start-up sequence. You can reset the NVRAM or PRAM by shutting down the Mac and then starting it up again while holding down the Option, Command, P and R keys all at once. If the Mac is not maintaining its settings for volume level, display resolution, time-zone information or preferred start-up disk, information held in the NVRAM may have become corrupt. Modern Macs also store some settings in an area of the system called the nonvolatile random access memory (NVRAM) older Macs use parameter random-access memory (PRAM) in a similar manner. might fix erratic Mac behavior, although it will not help with a damaged power supply or another major hardware problem. (You may also have to redo any preferences for your display and power-management settings.) While performing a reset does not generate an alert box or notification, you can tell if you were successful if the odd Mac behavior stops. The guide also lists a series of things you should try before resetting the S.M.C. To use a keyboard shortcut, or key combination, you press a modifier key with a character key. A keyboard shortcut is a way to invoke a function in OS X by pressing a combination of keys on your keyboard. Dont hold down the power button or youll force shut down your Mac give it a brief press. hortcuts Learn about common OS X keyboard shortcuts. reset process for all its Intel-based Macs, including those with removable batteries and desktop models. To safely shut down your Mac, press Control + Option + Cmd + Power. Appleās support site has a full guide to the S.M.C.
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