So I have the 2015 "13 MacBook so I read some articles to update firmware by holding the power button so i tried to try it for fun but I misunderstood the article and I held the power button while my mac had completed 1/4 of booting process. So I accidentally force shutdown my mac while it was booting. So should I worry about some firmware error or some sort of software error which I can't notice?
High Sierra – Is it Safe to Force Shutdown a Mac While Booting?
high sierrashutdown
Related Solutions
There are two possible ways provided by OSX.
- When you shutdown via menubar → shut down, you get a one minute counter till shut down. That's enough time to disconnect your devices.
- System Preferences → Energy Saver → Schedule
Firstly, you should update to OS X 10.11.6. It will solve many problems. Download 10.11.6 Update.
Secondly, reset SMC. Here is a link how to do it: Resetting System Management Controller.
If it doesn't help, try clean install: How to Clean Install El Capitan.
ADDITION:
If you can't do clean install using your own mac, make a bootable USB on another mac: Click here.
Also, go to Utilities and run Console.app for inspecting what's wrong with your OS: Click here.
It might be a problem with a hardware, so try single-user mode pressing cmd-s after startup 'chime' sound or verbose mode pressing cmd-v the same way. To read about it Click here.
And read an important post about 7 Mac Startup Options: Click here.
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Best Answer
Any forced shutdown can leave a file in a bad state. At boot, you would only corrupt a system file, so that's usually easy to reinstall the OS so I suppose if you care about user data - that's the best time to force a stop.
High Sierra supports internet recovery and bootable install media, so the options to reinstall are much better than the old days where you needed a CD or DVD to reinstall and it took a long time.