See if this helps. Is is from Apple Help
If you can’t move or copy a file or folder on Mac
If you can’t move or copy an item, you might need to change its permissions settings. You might also need to change permissions settings for the disk, server, or folder where you want to move the item.
On your Mac, select the item, then choose File > Get Info, or press Command-I.
Click the disclosure triangle next to Sharing & Permissions to expand the section.
Click the pop-up menu next to your user name to see the permissions settings.
If you’re not logged in as an administrator, you may need to click the lock icon and enter an administrator name and password.
Change the permissions to either Read & Write or “Read only.”
If you need to, also change the permissions for the location where you want to put the item.
I just moved to tif files between my boot drive and an external drive with no problem. In one case I dragged a file. In another, I did edit copy. I have a MacBook Pro 2019 running Catalina 10.15. I even went to Get Info and clicked on lock. The file dragged to the other drive.
I cannot answer your question other than guess the file is corrupt, but I would still expect it to move or copy. Try to duplicate the file and take it to the external drive.
The way the drive is formatted has nothing to do with this. Macs do not format like Windows. Good luck.
There is no reason it will not let you do that. I do not have that problem on any of my Macs. Can you move a jpeg? Should be the same. You should be able to open a folder on the external and highlight and drag to that folder.
What is actually happening? Are you getting any messages?
LP
Why should it be flipped?
Take this somewhere else. This site is about photography.
Maybe Costco can do that for you.
Looks like your focus is on the sheppard's hook. Focus on the squirrel's eye. When I blow it up I see noise in the background. Maybe the ISO was high? I still like the image. I recommend to improve it use the lowest ISO and a high shutterspeed. The depth of field works to blur out the background and that is good. The main thing I see is focus is slightly off. Focus on the eye. Thanks for posting.
Screw this site. am outta here.
I have both and mirrorless camera are fine but cameras with mirrors are not dinosaurs incapable of getting good images.
This site is getting to be a bunch of people with nasty comments. Why? Why are people so un-civil now.
It is today only.
Why should anyone care if it hasd a mirror?
You are a funny one. But, inaccurate.
In the end if the image doesn't cut it all else is irrelevant.
The above post did not the Minolta and Sony A mount lenses. 35 years of excellent glass that functions fine on E mount cameras with Sony adapters. The new adapter coming out later in October extends the new technology such as eye focus, animal focus and many others to the A mount.
So far behind. Hmm that's why it is the sales leader. At least you came up with some data this time.