![]() ![]() Select the "Disk Utility" option from here. This will boot your system in the Recovery Mode and launch the macOS Utilities window.As it restarts, press and hold the Command + R keys at the same time for a few seconds.Turn on your Mac or restart it if it is already power on. ![]() Here's how you can fix Mac black/white/green screen by repairing its startup disk. Since Mac lets us repair a disk on its own, you can take the assistance of Disk Utility to do the same. Most of the time, an issue like Mac stuck on a login screen usually happens due to a corrupt or malfunctioning disk. This means the system has been started with new PRAM settings. Once you hear the startup chime for the second time, release the keys. Keep holding them until your Mac would restart.Turn it on and press the P + R + Option + Command keys at the same time as Mac restarts.Firstly, turn off your Mac by long-pressing the Power switch and wait for a few seconds.Therefore, if you have got a black, white, or gray screen on Mac, then you should consider resetting its PRAM first. Apart from handing other vital system processes, it is also responsible for Mac's booting too. PRAM, which stands for Parameter Random Access Memory, is one of the major components in Mac. Just log-in to the administrator account and let the system boot correctly.It will automatically boot in the safe mode instead of the normal mode. Press and hold the Shift key as your Mac would turn on.Turn off your Mac if it isn't already.Furthermore, it will help you diagnose the reasons behind Mac Pro frozen screen as well. This will restart your system without any unwanted third-party or network process running in the background. If there is a problem related to a certain process or application in your Mac, then you should consider booting it in the safe mode. Wait for at least 15-20 seconds and press the Power key again to turn it on.If it won't work, then you can just remove the battery of your notebook or disconnect the main power supply of the desktop as well.It is mostly located at the top of the keyboard. To forcefully turn off Mac, press and hold the Power key. ![]() This will reset the present power cycle of the system and let you get back full control of it. If there was a minor issue with the firmware, then a forceful restart would fix it. If your Mac is stuck on the loading screen or has got a white/black/gray screen of death, then you can consider turning it off. Once it is done, try to restart Mac and check if it boots normally or not. Simply remove all the peripheral devices and only connect a mouse and keyboard to your desktop (genuine Apple products). If you are using a third-party peripheral device (like a Bluetooth speaker or mic), then it can tamper with the booting of the system at times. Solution 1: Disconnect all peripheral devicesĪs surprising as it might sound, this is the easiest fix to a Mac screen frozen issue. Before we discuss various issues and solutions individually, let's quickly consider some recommended solutions, suggested by the leading experts. It doesn't matter if your Mac is stuck on the loading screen or whether it has got a white screen of death – some solutions seem to fix Mac screen frozen issues of all kinds. Specific Ways to Fix Mac Stuck on Loading Screen The first form brings the system down in number minutes and the second at the absolute time specified.Īny other arguments comprise the warning message that is broadcast to users currently logged into the system. Time is the time at which shutdown will bring the system down and may be the word now (indicating an immediate shutdown) or specify a future time in one of two formats: +number, or yymmddhhmm, where the year, month, and day may be defaulted to the current system values. OS X uses this mode automatically with supported UPSs in emergency shutdowns. This simulates a dirty shutdown to permit a later automatic power on. The system is halted up until the point of removing system power, but waits before removing power for 5 minutes so that an external UPS (uninterruptible power supply) can forcibly remove power. The system is put to sleep at the specified time. The system is rebooted at the specified time. If -h or -r is specified, shutdown will execute halt(8) or reboot(8) instead of sending a signal to launch(8). If the -o is specified, prevent the file system cache from being flushed by passing -n option to halt(8) or reboot(8). The -k option does not actually halt the system, but leaves the system multi-user with logins disabled (for all but super-users). The system is halted at the specified time. Below, we’ve included the complete list of shut down switches and descriptions from Apple. The two methods we covered above are only two of the many ways you can shut down your Mac in Terminal. Other Command Prompt Shutdown Switches and Parameters
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