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See how much storage space is used on your Mac and how much space is available. If you see more than one disk in the Storage area of General settings, your internal disk has multiple volumes or containers.

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Your Mac has an internal disk, which is a storage device that contains the apps and information used by your Mac. Some Mac computers have additional internal disks or connected external disks. Specify a startup disk

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2025年1月30日 · Disk Utility can find and repair errors related to the formatting and directory structure of a Mac storage device. Errors can lead to unexpected behavior when using your Mac, and significant errors might even prevent your Mac from starting up completely.

Check if a Mac disk is about to fail. You can check the health of many disks using Disk Utility. Many disks include Self-Monitoring, Analysis, and Reporting Technology (S.M.A.R.T) hardware, which lets a disk test itself for potential problems. Open Disk Utility for me

If you get a message on your Mac that says a disk is missing or has failed, there are several things you can try to solve the problem. Open Disk Utility for me. If a disk is missing: Make sure it’s connected to a power source, turned on, and connected to your computer. If you’re using a USB disk, you may need to disconnect and reconnect it.

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