
How do I clean up my Mac using Disk Utility? You’ve probably heard “Remove your cache” as a web browser troubleshooting tip. Erasing your Mac permanently deletes its files. Make a backup of any files that you want to keep. What happens if I erase Macintosh HD in Disk Utility?
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Download and install Cisdem Duplicate Finder. How do I delete duplicate files on my Mac hard drive?ĭelete duplicate files on external hard drive on Mac or Windows in 4 steps Your Mac restarts from your Fusion Drive when done. Choose Reinstall macOS, then follow the onscreen instructions to reinstall the Mac operating system. When Terminal indicates that the operation was successful, quit Terminal to return to the macOS Utilities window. How do I reinstall the fusion drive on my Mac?

What happens if I erase Macintosh HD in Disk Utility?.How do I delete duplicate files on my Mac hard drive?.

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When you install Mac OS Mojave and higher your Mac converts you internal disk to something called APFS (Apple File System) and when Mac OS is installed on a APFS drive it creates two partitions one for the system data and the other is just the hard drive where you save stuff. Why do I have three hard drives on my Mac? The Macintosh HD volume is where the system and system support files are kept and the user has no access to them. The Mac HD – Data volume is where your files and apps are kept and you have access to them just like the older system volumes. Why does my Mac have Macintosh HD and Macintosh HD data?Īnswer: A: That’s normal. Then, there are two Macintosh HD – Data volumes, which may arise some problems. And system downgrading will also form a new Macintosh HD – Data volume. Why should you delete the Macintosh HD – Data? Because the Macintosh HD – Data volume of the previous macOS will be retained after downgrading macOS. Should I delete Macintosh HD or Macintosh HD data?

Because with APFS a container can have multiple volumes that can share all of the space, they should both have the same size as your hard disk/SSD.
