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Disk Utility doesn't work.
iMac 24″, macOS 13.0
Follow these instructions: What to do before you sell, give away, or trade in your Mac - Apple Support
Follow these instructions: What to do before you sell, give away, or trade in your Mac - Apple Support
What happens when you try? And why completely erase everything? Then you are left with a computer that won't function. To erase it, try restarting in the Safe mode and then use Disk Utility.
Disk Utility won't let me use the Erase button. I want to return this 9 year old computer to Apple. All of the files have been transferred to my new one.
How can I erase my old Mac, macOS Catalina version 10.15?
