Hi Matti
Thanks so much for all the time and effort you're putting into this.
It seems to me there are two things going on here. Apart from these rogue files, Airdrop has become erratic - works sometimes but more often 'Fails'. I looked this up as well and it seems to be a common problem since the introduction of Sanoma and has persisted through 3 updates. These first of these files were left after one of these failed Airdrops. I tried again a couple of times with just a few and it kept happening. I have since had limited success with Airdrop. Such a pest because a project I'm doing involves transferring a lot of photos on a regular basis. I'll write to Apple and push for a fix. (Someone in the Sanoma/Airdrop thread was urging everyone to do that).
> I tried on the 'Disk image' got a message to say the computer would be unresponsive
>> Which disk image?? You don't usually/ever have to check the Recovery etc disk images that the Disk Utility might show.
Reply: Sorry - I might have got the name wrong, would have to go back into Rec mode to check this - it was the second volume available to run DFA on - showed up my SSD card and also this, both had containers.
> They're 'loose' in my Downloads folder
>>You could move (or delete) the other files in the Downloads folder elsewhere so the next steps might be easier. How many and what kind (suffix) files the stubborn files are (10?, 1000?)?
Reply: There are 149 and they are .heif/HEIF image files. and yes, I have removed everything else. After doing the DFA, I managed to Airdrop the rest of that lot of photos in small batches and removed them from Downloads each time. I had a couple of fails but didn't get any more of the rogue files so it might have fixed something even tho I still can't delete them.
I'm a bit nervous of the terminal - I have used it but only on an old Mac where I had nothing to lose. It seems very easy to do a lot of damage with the wrong command.
I'll print out your description and try it when I have a clearer head and more time than I have at this moment. The I can cross it off as I go and be really sure I'm following carefully!
And yes, I do have two backups on separate Time Machine externals, but I also wonder if reinstalling from Time Machine wouldn't just reimport all the old problems. Last time I reinstalled a fresh system and just copied the apps and data from the backups.
It's still under AppleCare - I've been considering taking it to our dealer, but I get worried about letting other people mess with it!! They didn't impress me hugely in there when I bought it!
Thanks again so much for all your help. I'll let you know if I get brave enough to try the terminal!
Cheers, Jane
You could reboot into recovery mode and launch the Terminal there (so no app should hold on the stubborn files). Then move to the ~Downloads folder (use something like cd '/Volumes' (use those quotes to escape possible spaces in the folder names) then check what folders are there with 'ls', then proceed one folder at a time to something like cd /Volumes/'HD - Data'[my internal disk name is HD, YMMV]/Users/[me]/Downloads').
Then in the Downloads folder 'ls' to check its contents and try to remove the 1st file with (again use quotes to escape possible spaces in the filename), confirm delete with 'y' or cancel with 'n':
rm -i 'stubborn file.jpeg'
If that does not succeed, try (it prompts for your Mac's admin password):
sudo rm -i 'stubborn file.jpeg'
If either one works (and the file vanishes), delete all stubborn .jpeg files in that folder (make sure you are still at the Downloads folder with 'pwd' command) with:
rm -i *.jpeg
Leave off the confirming option '-i' if you are confident everything is going OK and there are numerous such files. Then check with 'ls' if there are other files with other suffixes that must still be deleted.
https://www.howtogeek.com/858815/linux-rm-command/
There was a similar thread recently. It might be an option to try to delete some preference file etc but maybe someone else will chime in about that. If uncertain, you can ask some unix person for help or consult some Apple authorized dealer.
I accidentally dropped 86000 pics onto th… - Apple Community
Optionally, you could try to re-install Sonoma 14.3 on top of the old install (as always, do a backup first although the user data is left intact).
If all else fails, you could backup, reformat and restore.