Can you sudo su and elevate to a complete root user?
Yep. I did that then tried the command from my OP again and got the same error. What confuses me is that I can do whatever the heck I want to other subfolders in this same NAS folder. The only one I can change / delete is the 06082023 folder.
What happens when you ls -la on the containing directory? That should tell you the owner.
You're probably going to have to log in to the NAS and manage the folder, sounds like something on the device has taken ownership. It's hard to tell why, sometimes various media indexers can do funny things. I always disabled those on the Synology units I had.
ls -l shows me as the owner of all the folders on the drive. (I'm logged into the NAS already.)
And you can't delete the folder as root user on the NAS?
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