Apple releases major Mac operating system updates annually, while minor system updates happen every two or three months. A new Mac OS is designed to improve user experience. However, many mac users found that a macOS update made their Mac not boot up. It could be really annoying when you urgently run your Mac, be it an iMac or a MacBook. This post will provide you with three steps. When your Mac doesn’t boot up, let’s keep on reading.
Sep 13, 2021 Use About This Mac to check the version of Mac operating system installed, and find out whether it's the latest (newest, most recent) version. Which macOS version is installed? From the Apple menu in the corner of your screen, choose About This Mac. Jun 28, 2021 Update Now installs the latest updates for the currently installed version. Learn about macOS Big Sur updates, for example. Upgrade Now installs a major new version with a new name, such as macOS Big Sur. Learn about the latest macOS upgrade, or about old versions of macOS that are still available. My daughters both have MacBook Air - 13 inch 2017 models with i5 processors and 8 GB RAM. Both machines are running MacOS High Sierra 10.13.6 (the current version of High Sierra). Is the best/right OS for their machines? Is is not clear to me if they should upgrade to either Mojave or Catalina. Every version of Mac OS X and macOS in order from the first to the latest macOS, plus how to tell which version you have. New MacBook Air 2021/2022 release date, price & specs.
Let’s go straight to the point; you are suggested to troubleshoot this issue by the following steps:
Now you can take a look at each of the steps.
If your Mac has problems booting up after the macOS update, it’s possible your Mac computer ran out of power, and the APFS reformatting process was interrupted, or the startup disk was corrupted. To rescue it, you are advised to check and repair the disk with Apple’s built-in disk repair tool, Disk Utility, under macOS recovery mode. Grab your attention to see how it works.
If Disk Utility reports operation successful or repaired, you’re free to restart your computer. Nevertheless, another situation is no disk error is found by Disk Utility. It turns out the hard drive is not responsible for Mac not booting up, then what is the reason behind Mac not turning on? You can find the answer under Safe mode.
Safe mode can determine whether an issue is caused by software that loads when your Mac starts up since it will only launch some basic necessary programs. That means it can isolate incompatibility software that makes your Mac unbootable. Really helpful, right? Here’s what you should do:
Once you boot into Safe Mode successfully, you’ll see Safe Boot at the right top. And it indicates that the unbootable Mac is caused by third-party software incompatibility. You must be wondering who’s the culprit, don’t worry, Verbose mode can help you out.
You need to reboot the Mac, then hold Command + V at startup. What catches your eye is a live report, but it will stop at the misbehaving software that prevents the Mac from booting up. Now you have caught the culprit, and all you need to do is uninstalling it in Safe Mode.
Unfortunately, if you fail to boot into Safe Mode, it means it’s a macOS update failure. It would help if you reinstalled the macOS in Recovery mode, and reinstallation can place your data in danger. Therefore, before making any movement, you are strongly advised to restore your data with iBoysoft Data Recovery for Mac from an unbootable Mac first.
You are here because your hard drive is safe and sound, and there’s no software incompatibility found in Verbose Mode. What else can you do to get rid of the trouble? Check the hardware inside your Mac. Please don’t be nervous; you are not required to do it yourself. Apple has many bricks-and-mortar stores, and you can easily get help there.
Coming with the biggest design update, macOS Big Sur made its appearance in June 2020. It’s the latest major release of the Mac operating system and now is in beta version. Up to now, known boot issues of macOS Big Sur Beta include the following.
If you have met these issues after updating to macOS Big Sur, feel free to try the above three solutions.