Also, often when I shut down I see a black screen, but not completely turned off, so I have to shut down by pressing the power button for 3-4 seconds. Some applications won't open, or don't work as expected, and generally I see the spinning pinwheel and macOS is really slow.
#Mac runs slow in safe mode pro
I have an issue on my MacBook Pro (15-inch, mid 2010, macOS Sierra). For Macs with Apple Silicon: Shut down your Mac and wait 10 seconds. The process for booting in safe mode differs depending on whether you have an Intel Mac or one with Apple Silicon (for example, an M1 MacBook Air, MacBook Pro, or Mac mini).
#Mac runs slow in safe mode mac os x
If you’re running Mac OS X 10.5 or later, hardware accelerated graphics are also kaput. Mac running slow and some applications don't open in standard mode, but in safe mode it works well. Booting in safe mode then rebooting normally can fix lots of different problems. Specifically, DVD Player, iMovie video capture, audio input and output devices, and modems won’t work. Restarting normally recreates this cache.Īpple goes on to note that certain features won’t work when your Mac is booted this way. A cache with issues may cause a blue screen on startup, particularly after a Software Update. Mac OS X v10.5.6 or later: A Safe Boot deletes the dynamic loader shared cache at (/var/db/dyld/).It disables all startup items and login items (Mac OS X v10.4 or later).It moves to the Trash all font caches normally stored in /Library/Caches//(uid)/, where (uid) is a user ID number such as 501 (Mac OS X v10.4 or later).It disables all fonts other than those in /System/Library/Fonts (Mac OS X v10.4 or later).In Mac OS X v10.3.9 or earlier, Safe Mode runs only Apple-installed startup items (such items may be installed either in /Library/StartupItems or in /System/Library/StartupItems these are different than user-selected account login items).It loads only required kernel extensions (some of the items in /System/Library/Extensions).You may see a progress bar on the screen during this check, and the computer may take longer than usual to complete its startup. It forces a directory check of the startup volume.According to Apple, this is what happens during Safe Mode (and I quote): You can let go of the Shift key when you see the Apple logo and a progress bar. You enter Safe Mode by shutting down your Mac and then starting it up while holding down the Shift key as soon as your Mac’s monitor lights up.
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