After the system is back up and running on the freshly formatted drive you should be able to boot to Safe Mode again.
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We delete comments that violate our policy , which we encourage you to read. Discussion threads can be closed at any time at our discretion. Don't show this again. Computers What to do when a Mac won't boot to Safe Mode If your system hangs when going into Safe Mode, or will not load into Safe Mode at all, there are a couple of things you can do to fix the situation.
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Filed Under: Startup Manager Most Mac users will probably only ever use the single drive that came with their system. Apple KB HT The Mac Startup Manager will update as needed, so if you add or remove bootable drives or devices on your Mac, the list will automatically display the current options.
Aug 17, Starting your Mac in safe mode does the following: the command line by opening Terminal remotely, or logging into the computer using SSH. Dec 1, Note: Safe Boot only appears on the startup screen; it does not appear in the corners of the desktop the way it does in Windows.
Enable Target Disk Mode Target Disk Mode is a very useful feature exclusive to Macs that, in effect, lets you turn your Mac into an unnecessarily complex external drive. Share this: A Better Windows Volume Mixer.
You can stop holding the Shift key when you see an Apple logo and progress bar. Wait for the login screen to appear. CleanMyMac X is one of those so check it out. Disable startup programs. After the system is back up and running on the freshly formatted drive you should be able to boot to Safe Mode again. Once your Mac is running in Safe Mode, some applications will no longer be available. Move all font caches to the trash.
Note that it may take longer than usual to boot your computer: You will not have to hold the Shift key when the computer restarts, simply log in when prompted. To find your boot mode, click on the Apple logo in the menu top left and select This Mac.
Choose System Report, then Software, and from there you will be able to see whether you are in normal or safe mode. Your performance speed will change.
Typically macOS will run slower when it is in Safe Mode due to the reduced processes, but if you have noticed some serious lagging this may be improved by the faulty applications being restricted. Running your macOS in Safe Mode is normally used to troubleshoot glitches that you have noticed, such as lag, crashing, or spontaneous closures of applications.
You should try to use your Mac as you normally do so that you can see if the issues have disappeared in Safe Mode or are still there. It should then reboot as normal, hopefully with improved performance.
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?
Check your keyboard is clean and that there is no debris beneath the keys.