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High Sierra Boot Disk Problem

I have followed Apple's instructions to the "T" about how to create a High Sierra Boot Disk, and yet I get an error message in terminal: "Error erasing disk". I manually erase my flash drive with Disk Utility & try again, but no go??

MacBook Pro

Posted on Jul 27, 2022 8:44 AM

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Question marked as Top-ranking reply

Posted on Jul 27, 2022 9:44 AM

Hey there, from my notes...


Error 69888…

sudo fuser -c /dev/disk2s2

macos - Error: -69888: Couldn't unmount disk - Ask Different (stackexchange.com)

Create install media for High Sierra - Apple Community


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High Sierra Boot Disk Problem

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