Copying large file from SD to HDD via USB failing on Ubuntu

"At least try a card reader as part of your troubleshooting steps.

Swapping out one hardware component for a work-a-like is a good thing -- if your problem continues, the hardware component you swapped out is good; if your problem disappears, the hardware component is bad.

Of course it's rarely that simple, so here are some other helpful tests:

Does the problem recur if you try the camera on another computer?
Does the problem recur if you try the card in a card reader on another computer?
Does the problem recur if you boot into a different kernel version? Try both camera & card reader on the different kernel.

In Linux, most drivers are included as part of the kernel, so the driver code can differ (and driver behavior can differ) between versions. Something that doesn't work in one kernel may work in an older or newer kernel."

"sudo apt-get install gphoto2
gphoto2 --auto-detect
gphoto2 --get-all-files

I found this on the following site."