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Undeletable Trash after Big Sur upgrade

I upgraded to Big Sur 11.2.3 and now have a number of files in the Trash that will not delete by regular methods. They appear to be aliases, files, folders from ~2010 that have been migrated over several OS upgrades. The error is I don't have permission to access them.

iMac 27″ 5K, macOS 10.15

Posted on Mar 18, 2021 11:26 AM

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10 replies

Mar 18, 2021 12:51 PM in response to Tom Ostertag

Boot into Safe Mode by booting with the Shift key held down and see if you can delete them from there.  Reboot normally.


NOTE: Safe Mode boot can take up to 10 minutes as it's doing the following; 

• Verifies your startup disk and attempts to repair directory issues, if needed

• Loads only required kernel extensions (prevents 3rd party kernel/extensions from loading)

• Prevents Startup Items and Login Items from opening automatically

• Disables user-installed fonts 

• Deletes font caches, kernel cache, and other system cache files


Or, move them to a folder on the Desktop and bring up the Info pane for each item. For each add yourself to the owners list with Read and Write permissions. Then try to delete.

Mar 23, 2021 2:17 PM in response to Tom Ostertag

AIf the files are in the Trash then the install protocol wanted them deleted. If all else fails you could disable SIP long enough to finish the deletion and then reenable SIP. I've done that with Catalina to install a 3rd party hack for testing. Just don't do anything else and reenable it immediately after the deletion.


Here's how:


To disable SIP:

enter the following Terminal Command:

$ csrutil disable

followed by the Return key and a reboot.

To re-enable SIP:

enter the following Terminal Command:

$ csrutil enable

again followed by the Return key and a reboot.


Mar 18, 2021 7:16 PM in response to Old Toad

Okay, I went through the entire collection of items doing what you said, adding myself with read and write permissions. They still wouldn't delete and every item said they "can’t be modified or deleted because it’s required by macOS." These are files related to iLife and are obviously not being used by macOS. A lot of them are aliases and the original items have been deleted many upgrades back. I used iLife on my G4 that was replaced with an iMac mid 2011 and that has been replaced by an iMac 2017. Yes, I migrated instead of doing a clean install, but these are cache files that shouldn't have been moved.

Mar 19, 2021 4:26 PM in response to Old Toad

Thank you for your help on this one. Yes, I did add my name and Administrator to each and every folder that allowed it. The aliases do not have a Sharing & Permisssions option. I looked in Terminal and noted that they are link items (permissions start with an "l"). I tried to delete them with rm and received a reply that that wasn't allowed.


This is way beyond my Unix/Linux experience and comfort.

Mar 24, 2021 9:46 AM in response to Old Toad

Thanks Old Toad!


That worked just fine and may have solved a problem with the computer not wanting to shutdown when I choose to... it would sit and time out, then reboot by itself and if I chose shutdown at the lock screen, it would shutdown. This happened when I upgraded from Mojave to Catalina... I was never able to find the source of that either but I didn't have any trouble doing the reboots and the computer DID go into Recovery mode this time.

Undeletable Trash after Big Sur upgrade

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