Can’t erase your Mac’s startup disk? Try Internet Recovery as a last resort

You might be trying to erase the recovery partition, which you can’t do. Here’s how to erase the disk.

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Apple

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Glenn Fleishman is the author of dozens of books. His most recent, updated for iOS 14, iPadOS 14, and Big Sur, are Take Control of iOS and iPadOS Privacy and Security, Take Control of Your Apple ID, Second Edition, and Take Control of Wireless Networking and Security. He’s a senior contributor to Macworld, where he writes Mac 911.
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