#Launch mac in safe mode install
#Launch mac in safe mode update
#Launch mac in safe mode software

If your Mac isn’t booting after installing Big Sur, the problem could be as easy as performing a force restart of the computer. You can also reinstall macOS Big Sur from Safe Mode, which might fix the problem. Note that this Safe Mode fix for when Big Sure fails to boot is commonly useful for anyone who has seen their computer go through a constant boot loop after attempting the update.

#Launch mac in safe mode software

If macOS Big Sur works in Safe Mode, you have a conflicting software program that needs to be addressed.

Release the shift key when you see the Login window.

When you hear the startup sound, press the Shift key immediately.

Press the power button to turn the computer back on.

Make sure that your computer is shut down completely.

To boot your computer in safe mode, follow these steps:

#Launch mac in safe mode install

You will then need to figure out what program is causing the issue, but at least you’ll know that the Big Sur install worked out ok. If you can run Big Sur in safe mode, you will know that there is something else on your system causing the conflict. This can help you figure out any specific conflicts with other software that might be causing your computer not to boot up after the Big Sur install. Safe Mode is a way to launch your computer without having any unnecessary software programs running. After this, your computer will restart, and your NVRAM parameters should be reset, allowing for macOS Big Sur to run properly.Īnother way to fix boot-up problems caused by macOS Big Sur is to boot up your computer in Safe Mode.If you have a Mac with a T2 security chip, wait for the Apple logo to appear and disappear twice and then release the keys. If your computer plays a startup sound, wait until after hearing the sound a second time and then release the keys.Hold these 4 keys down for about 20 seconds. Immediately after the computer turns back on, press all of these keys at the same time: Option, Command, P, R.Wait for the computer to shut down completely and then press the power button.To perform an NVRAM reset on your Mac computer, follow these steps:

#Launch mac in safe mode update

NVRAM is a small dedicated amount of memory that your computer uses to store certain settings.Ī new update can cause access to this memory to get a little out of whack, so a reset might be needed. If you have installed macOS Big Sur and your computer won’t restart, then you might need to reset the non-volatile RAM (NVRAM) on your machine. It could be due to an internal issue with your computer or other software installed on it, causing a conflict. The initial release of Big Sur follows suit here, and some Mac users are reporting problems like this. That’s why you see so many different versions of an update become available. There are often bugs, glitches, and other issues to iron out with any new update after it is released.

Fix #4: Make Sure You are Connected to the Power Supply.