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Alf2001 Author

Level 1

22 points

Problem making disk image from folder on external HD even though works ok on internal macOS SSD?

Hello, I'm trying to make a disk image from a folder on an external hard disk formatted as 'Mac OS Extended (Journaled)' and get an error message soon after trying this with Disk Utility. The error message is "Operation failed: Operation not permitted". So I assume some privilege of some sort is the problem? The external HD has "Ignore ownership on this volume". If I move the folder to my user directory, then Disk Utility works ok. Any suggestions appreciated. Using macOS 12.4 on MacPro6,1

Mac Pro, macOS 10.12

Posted on Jul 6, 2022 11:36 AM

Top-ranking reply

Barney-15E

Level 10

116,362 points

Posted on Jul 6, 2022 8:34 PM

Just guessing, give Disk Utility Full Disk Access in Privacy tab of Security & Privacy system prefs.

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Problem making disk image from folder on external HD even though works ok on internal macOS SSD?

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