Email yours to mac macworld. Mac cannot reply to email with troubleshooting advice nor can we publish answers to every question. How to erase a Mac that seems to lack erasure options. How to fix a long pause with a black startup screen in OS X. Single User Mode is going to be for people comfortable with the command line. This prompt lets you run fsck and other Terminal commands. If you have a problem narrowed down and are comfortable with the command line, use Single User Mode.
It has the same restrictions as Verbose Mode for encryption and firmware passwords. If you want to copy data off of a Mac, Target Disk Mode is useful. You can then use Migration Assistant or even Finder to copy the files that you need. This mode has a somewhat limited application, but it is one that can be helpful.
Many of these startup key combinations are for troubleshooting your Mac. It might not be a bad idea to play around with a few of these so that you are not taken by surprise when you have a problem. Recovery Mode has most of the tools that you need, but digging deeper never hurt anyone.
Option key don't work on boot - Apple Community
It never hurts to be familiar with the many steps Apple Support are going to ask you about. It cannot hurt when trying to get one of the limited Genius appointments at your local Apple Store. Ever had a time that one of these startup options saved your Mac? Is there a Mac troubleshooting secret you think everyone should know? Let us know in the comments.
Explore more about: Your email address will not be published. I have tried every single one of these just to see if I could get anything to happen except the flashing file folder with the question mark in it. Negatory my friends. Top Deals. Email Facebook Whatsapp Pinterest Twitter. Enjoyed this article? Stay informed by joining our newsletter! Enter your Email.
Suddenly the EFI boot option appeared. I guess the pram can really get corrupted. I had the same problem and I found out it was an error with my mouse, because my mouse Razer Naga was interfering with the keyboard for some reason.
How to Use OS X Boot Options to Troubleshoot Your Mac
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- What to do when keyboard commands don’t work at startup on your Mac | Macworld.
This is true whether I'm starting from the shut-down condition, or restarting. I've tried hold down each of the two option keys and I've tried holding down both at once. I've tried pressing the keys from before the startup chime and just after. Any thoughts on how to get the machine to behave as described in the docs? Agvorth Agvorth 7 18 Just clarifying: On the laptop's own built-in keyboard. As stated here, if on a Wireless keyboard, press Alt when you hear the chime. Before that, keyboard is not detected.
Boot sequence is prime espionage target. Must be simple, transparent. Booted software takes control over machine. Any unexpected behavior here suspect. Option key must always go straight to menu. I had a similar issue and the below trick solved it.