Barkings! | The SmallDog Apple Blog

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So, you’ve just updated to the newest version of High Sierra. Perhaps you moved up to High Sierra from an earlier operating system to take advantage of the newest features and security patches. After installation, instead of your familiar desktop photo or login screen, you’re greeted with a flashing folder and there is seemingly nothing you can do about it. Enter recovery mode!

Recovery mode is a tool that’s been available to the Mac user since the introduction of OS X Lion (10.7) it’s essentially a separate partition created on install. 10.7 was the first Mac OS to eliminate physical install disks, this new partition provides access to the tools that were only previously located on recovery disks. Those tools include “Disk Utility”, used to create/erase/modify internal or external hard drives and their subsequent partitions (portions of space created on the drive for use) “Restore From Time Machine Backup” which allows you to restore your machine to a previous state that you would have stored on an external hard drive using Mac’s built-in backup software. Lastly, the most helpful tool when it comes to reinstalling an operating system that may have gotten corrupt or damaged during install “Reinstall macOS”.

To get to recovery mode, you start with the machine fully powered off. Press the power button as if turning the machine on as normal and immediately press and hold both the “command” key and “R”. Hold those keys until you either see the Apple logo or a spinning globe. If you see the Apple logo it is booting into its recovery partition, if you see the spinning globe it may ask for your WiFi password as it’s starting from an internet based recovery program.

Now, back to the main topic. You’ve suddenly been greeted with a flashing folder, so we want to get into recovery mode first (CMD+R) once at the utility screen you’ll want to choose “Reinstall macOS.” Follow the prompts. When it asks where you want to install you simply choose your main drive (typically listed as Macintosh HD unless you’ve otherwise changed it) and that should be it, just let the machine do its thing and reinstall the operating system.

If after the reinstall you’re still greeted with the flashing folder, it is a signal of a deeper lying issue and may require service. If that’s the case, bring it on by one of our stores and our talented technicians can see what they can do to bring your machine back to life!

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