Change to SD card data after copying files with Dolphin


Apologies if this is the wrong sub-section - I can’t see any better heading for this.

A friend recently took a large number of pictures on his Canon SLR. I borrowed the SD card, put it into a USB 3 card reader and connected that to my LEAP 42.2 /KDE PC. The drive appeared as normal in Dolphin (DCIM directory etc) and I copied all the pictures, unmounted the card and gave it back.
My friend, now back at home in France, now tells me that when he put the card back in his camera, it reported to him “card not formatted, do you want to format it now?” and would not transfer any pictures to his laptop.

Can anyone shed any light on what might have happened? I was not expecting that my reading the card would have changed its content in any way (although I suppose the copy might have perhaps set an archive bit??

By the way, there is no data loss involved here, I am able to send my copies of the pictures to my friend easily. I’m just curious as to what might have changed.



LEAP 42.2, KDE Plasma 5.8.6 Dolphin 16.08.2

Strange, I got an email with a reply but can’t see it here, presume deleted. But to answer the question it asked anyway, I selected the files in Dolphin, and used Dolphin to paste them to my PC hard drive.

That was me :’(.

After I posted I saw the answer was in your thread title.

And to add some not helping thoughts:

Even if you moved instead of copied the files, the file system (whatever it was) should still be there and OK. In other words I do not understand it either. And my question was one of the sort: try to find out what went wrong without the OP understanding he did something peculiar. Or in other words: a shot in the dark.

The card could be damaged on the transport though. I do not know what modern security check machinery does to them.

That’s what I was thinking. Wouldn’t be the first time.

Thanks guys. I know the card didn’t go through any airport-type security on its travels. But I’m reassured that there’s nothing obvious I (or Dolphin) might have done to cause this. The camera in question (a Canon SLR) is pretty old and the card was the original and had never before been removed. It seems likely then that some physical mishap occurred to it at some point after I copied the files. The process that I described is one I perform with my Nikon all the time and this has never happened to me.