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Level 1

5 points

trying to erase data from old Mac, cannot access the erase tab under disk utility. help

trying to erase data from old Mac 2017, cannot access the erase tab under disk utility. help

Posted on Jun 26, 2021 10:31 AM

Top-ranking reply

Level 7

23,405 points

Posted on Jun 26, 2021 11:06 AM

If you are trying to erase a volume in Disk Utility but can't, it's likely that you're trying to alter your startup drive. That is disallowed.

You'll have to startup in Recovery mode to do that.

How to reinstall macOS - Apple Support:

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