P: LR cannot delete files from a drive that doesn't support trash

The real cause of the problem:
Lightroom (for whatever reason) checks whether the media source volume is "External" when deleting files – and displays this error message if so.
If the photos are stored on the internal SSD, the problem doesn't occur!

You can check this in the terminal:
diskutil info /Volumes/<YOUR EXTERNAL VOLUME NAME> | grep -e Protocol -e Location
=> Device Location: External

The only solution until this useless behavior of Lightroom is resolved: Thunderbolt enclosures with Intel JHL7440 controllers are recognized by the system as "Internal." The cheaper enclosures have ASMedia USB4 controllers and are not true Thunderbolt NVMe bridge chips, so they are recognized as "External."

There appears to be another solution to this issue - which I started suffering recently. I think it might have been mentioned in this thread. So, I took one image I wanted to delete. Used - show in Finder. Dragged that one imaeg to the bin. Went back to LR, it obviously can't find that image - but tried deleting a bunch of others - bizarre, they now delete just fine, no warning message. 

I've no idea how or why that worked - but grateful to the person that mentioned it. As I'd tried the Permissions route before - can't remember if it worked or not, only know that the issue had returned - until now. Fixed. 

Message informatif :

LrC 13.5.1 sur sur MacOS 15.0.1
Fichiers RAW sur un SSD T7

PSSD T7 Shield :

Identifiant du produit : 0x61fb
Identifiant du fournisseur : 0x04e8 (Samsung Electronics Co., Ltd.)
Version : 1.00
Numéro de série : S76ZNS0W807087N
Vitesse : Jusqu’à 10 Gb/s
Fabricant : Samsung
Identifiant de l’emplacement : 0x00200000 / 1
Courant disponible (mA) : 900
Courant requis (mA) : 896
Exploitation supplémentaire actuelle (mA) : 0
Media :
PSSD T7 Shield :
Capacité : 4 To (4,000,787,030,016 octets)
Support amovible : Non
Nom BSD : disk6
Logical Unit : 0
Type de carte de partition : GPT (Tableau de partition GUID)
État S.M.A.R.T. : Vérifié
USB Interface : 0
Volumes :
EFI :
Capacité : 209.7 Mo (209,715,200 octets)
Système de fichiers : MS-DOS FAT32
Nom BSD : disk6s1
Contenu : EFI
UUID du volume : 0E239BC6-F960-3107-89CF-1C97F78BB46B
disk6s2 :
Capacité : 4 To (4,000,577,273,856 octets)
Nom BSD : disk6s2
Contenu : Apple_APFS
Si je supprime via l'OS (Placer dans la corbeille) le fichier est correctement déplacé dans la corbeille et je peux le "Remettre" à son emplacement d'origine.

Il me semble que ce n'est que depuis LrC (menus Catalogue/ dossiers) que ça ne fonctionne pas !

I have had this start up on my Mac yesterday after adding another user on the Mac.

Hi, I'm hoping I can get some help from you folks!

So I got an error message to the effect of the post title when I went to delete some files from disk from within LR, which seemed odd to me. I've never seen this message in LR before. For reference, I'm on a modern Sandisk SSD. I formatted it before i started using it today (macos extended journaled). So, upon hitting the delete key with the files selected, I think I got the normal popup first, where it prompts you to Remove From Lightroom, Delete From Disk or Cancel. I chose to Delete From Disk, as i was sure i wanted to do this. I don't remember the exact order of things, but I think I then got another popup that said something to the effect of "You are deleting files on a volume that does not support trash. They will be permanently deleted" or something. I was flustered by this as I had never seen it before, yet I was sure I wanted to delete them, so I chose to permanently delete.

Its possible the order/windows I mentioned above differed slightly from my recollection, but as I was not able to reproduce the issue, I did my best to recant what happened for you all.

So I don't understand why i got that popup. But anyway, it gets weirder. I then went on to delete other files, from another folder, living on this same drive. Only this time, when I selected the files in LR, then hit the delete key, i got the standard popup to delete from disk (i THINK, cant remember right now, this all has flustered me), and i selected delete from disk, and poof the files were gone from LR, and also from my drive, and nothing is indeed in the trash bin from either time. No warning about the volume not supporting trash, just the normal prompt, and then poof, permanently deleted with nothing sent to the trash bin.

I dont understand why:

1) i got the "volume doesnt support" trash prompt in the first place.

2) the second time i did a delete, i didn't get that popup, it just straight permanently deleted them without giving me that warning prompt again!

Either way, I dont need those files back, I was certain I wanted to delete them. So thats not an issue. But please folks... what is going on?!

Please and thanks!

I am using lightroom classic 13.0.2 on my new iMac M3 desktop. The OS is 14.1.2 (have not upgraded yet to 14.2 as i understand there are issues with lightroom). However in lightroom when I am deleting a photo I get a message "The files are on a volume that does not support trash". My original photos are stored on a T7 Samsung external drive, and I have reviewed past posts from 2020 when someone was questioning a similar issue and I have tried all the reply remidies to no avail. Can someone help me please..

I got this problem after upgrading the "same" Mac to Sonoma 14.1.2 The external drive is APFS and I have no problem deleting any file there to the trash.

The problem is with LR Classic and I am sure a future update will resolve this issue. Till then I am happy making this extra click.

This might be a good reference and starting point:  https://www.lightroomqueen.com/community/threads/files-on-a-volume-that-doesnt-support-trash.38836/

I googled your error.  There are several Mac issues that can cause this.  Included are permissions, disc formatting, connection errors and malware.  If it were me, I would do some research focused on Mac issues.  

Since it is a move to a new Mac, my first suspicion would be file permissions.