Why is my Mac flashing a folder with a question mark?
A folder with a flashing question mark means that your startup disk is no longer available or doesn’t contain a working Mac operating system.
Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.
While in macOS Recovery, use Disk Utility to repair your startup disk.
What does a file folder with a question mark mean?
Rach, the folder with the question mark means the computer cannot find the startup system. This could happens because files that are needed to boot the computer are damaged, or the drive’s directory is damaged.
How do I get rid of the question mark on my Mac?
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How to remove Question Mark icon from the Dock menu of Mac® OS X
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What does ? mean on Mac?
Mac OS X has several bootup symbols, including a universal “prohibitory” sign that indicates critical files are missing from the boot volume. This symbol at boot means Mac OS X cannot access critical files on the start-up disk.