Instructions: Boot Mac in Safe Mode (Safe Mode)

Apple Mac Safe Mode, Startup, Restart, Troubleshoot

If you have problems with the Apple computer, it should spin around or you want to clean up the system a bit, then it can make sense to let the Mac boot in safe mode. The safe mode of macOS brings you among other things the cleaning of memories of the system, which remain filled with a normal restart. In addition to the instructions on how to start your Mac in Safe Mode, here are some other tips in case it still causes problems.

The instructions for booting the Mac in Safe Mode, i.e. for Safe Mode, can be found in this post - along with further tips against a slow Apple computer.
The instructions for booting the Mac in Safe Mode, i.e. for Safe Mode, can be found in this post - along with further tips against a slow Apple computer.

Instructions: Boot Mac in Safe Mode (Safe Mode)

Starting your Mac in Safe Mode is not that difficult. If you do not want to make any further settings in it for the time being, the safe mode boot with a subsequent restart can bring something:

  1. Turns off the Apple Mac completely
  2. Then restart it with the Shift key pressed
  3. Hold down the Shift key until you hear the start tone
  4. Wait until the Mac has finished booting (may take a while)
  5. Then restart it, this time without the Shift key


This process clears caches and maybe the problem with the slow computer, the apps sucking too much RAM and the like has been resolved. If not, you can also start the computer in "Verbos Mode", ie in Detailed log mode. To do this, press the command key (⌘) and V at startup. This ensures that the respective process, various system sequences and the like are displayed when you boot. Some of them are not easy to decipher, but you can find the part more quickly where there are stuck.

Calibrate system and programs

The app TinkerTool be helpful. In this post, which served as inspiration for the text here, it is noted that the program can be used to activate (and deactivate) the mode with detailed log as the default. But often booting the Mac in safe mode should be enough. Safe Mode can also be helpful if your Mac is having problems after upgrading to macOS 10.13 High Sierra. There is this guide to the teething problems of the system: Apple macOS High Sierra: Why you should wait with the update ...

NVRAM, PRAM and SMC reset on the Mac

If the reboot in safe mode does not help and you do not know the start protocol either, then the reset of NVRAM, PRAM and SMC can help you. What is hidden behind the abbreviations, how you carry out the reset and what results are achieved with it, you can read in these instructions: NVRAM, PRAM and SMC reset on Mac - reset to solve problems. If you have further questions or comments on the topic, please leave a comment or use the contact form;)

My tips & tricks about technology & Apple

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In the Sir Apfelot Blog you will find advice, instructions and reviews on Apple products such as the iPhone, iPad, Apple Watch, AirPods, iMac, Mac Pro, Mac Mini and Mac Studio.