In these situations, or in situations where you would prefer the system always boot to Safe Mode such as when troubleshooting potentially unstable third-party extensions , then you can set the PRAM to pass the Safe Boot argument to the OS X Kernel. Once set, this variable will persist until it is cleared, which can be done either by resetting the PRAM on your computer , or by running the following version of the above command in the Terminal:.
If you are looking to boot your system into Safe Mode, then keep in mind there may be a couple of limitations that can prevent you from doing so.
While FileVault secures your files, it prevents the system from passing boot arguments since the disk must first be unlocked at the initial login screen before the operating system loads. To start up in Safe Mode, you must first disable FileVault. In addition to FileVault, if you have a firmware password set up on your system, then you will not be able to reset your PRAM. Therefore, be sure to disable any firmware password before resetting the PRAM.
It did not work for me either. Your Mac may have detected an issue that it thinks needs repairing in Safe Mode. If this happens only once, then great, your Mac did its job and cleaned up the issue before it could cause any more problems. If your Mac is stuck restarting in a Safe Mode loop, try entering another startup configuration, the Recovery Mode, by pressing Command?
Tip: Check your keyboard is clean and that there is no debris beneath the keys.
Test Your Hardware with Apple Diagnostics
Unfortunately, the responsibility to locate software issues still resides with the user in Safe Mode. A safe boot will check for disk problems, but if it fails to turn anything up you may be resigned to shifting through your applications list to see what might be causing the problem.
Luckily, some helpful maintenance utilities can be run while in Safe Mode. CleanMyMac X is one of those so check it out.oqisivenel.tk
Mac Won't Boot or Start After macOS Sierra Update
It clears through your junk before it can impact on your system, but if your macOS is starting to lag it might be time to perform a full clean-out of those unused applications. With an average of 62GB of junk cleaned from an average Mac, it's maybe just the tool you need to put your Mac back on track. How To.
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Blog How To News. Hit Return or Enter to search. How, why and when to boot Mac in Safe Mode. Darina Stavniychuk. Explaining complex stuff very simply. Passionate about writing. Did you enjoy this post? Subscribe Now.
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March 20, Updated: September 25, CleanMyMac X. Free Download. Subscribe to know first Our delivery owl will bring you our best deals and news about MacPaw apps.
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