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Folder Moving / Merging - Permissions Denied

This has been solved.

Mac mini

Posted on Sep 12, 2024 12:10 PM

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3 replies

Sep 13, 2024 11:16 PM in response to John Galt

The folder was not corrupted, it was simply moved to save space. And some files were not able to move due to permissions, so it got split in two.


This was for a music app that installs 50+GB onto your main drive, so the developers / user community have a workaround of moving the folder from /Library to external drive, then using an MAC FOLDER ALIAS folder within /Library to link to the data externally and save space on your main drive.


SOLUTION : I discovered that even though the top level folder had proper permissions set under 'Get Info' in finder, there was a subfolder that had different permissions - and these were the files that would not move. Once I changed the permissions on that folder specifically, I was good to go. I assumed that permissions in the top level folder would pass down to everything within it, but that's not the case. After that, I just used FreeFileSync app to merge the folders back together easily after that.


Hope this helps someone in future.

Sep 12, 2024 12:23 PM in response to KCNYC

The usual method is to restore a Time Machine backup created prior to the corruption:


Restore your Mac from a backup - Apple Support


If it has been less than 24 hours (or so) since then, you can restore a "local snapshot" which takes only a moment or two.


It's not clear to me how you managed to move a folder out of /Library (literally removing it) because dragging a folder from /Library using the Finder will result in it creating a copy, leaving the original item(s) intact. Attempting to undo whatever happened in the manner you did will be problematic at best because everything in that folder should be managed by macOS.


In any event whatever caused the corruption may never be known. Restore the backup.

Folder Moving / Merging - Permissions Denied

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