Just use PhotoRec to recovery an USB disk in bad condition (HD failed).
I have plenty of files...
.mov, .mp3, .mp4 and .jpg
Mov and other seem correct.

But all photos jpg files are very small !

-rw-r--r-- 1 root root 6.1K Nov 19 2018 t2959338432.jpg
-rw-r--r-- 1 root root 5.7K Nov 19 2018 t2959371200.jpg
-rw-r--r-- 1 root root 8.9K Nov 19 2018 t2959403968.jpg
-rw-r--r-- 1 root root 7.0K Nov 19 2018 t2959436736.jpg
-rw-r--r-- 1 root root 9.6K Nov 19 2018 t2959469504.jpg
-rw-r--r-- 1 root root 6.6K Nov 19 2018 t2959502272.jpg
As these photos come from a digital camera (Lumix and Nikon)... it's impossible to have a correct photo so little !

Last time I use PhotoRec (photos was coming for other photo cameras), it was perfect.
Why JGP are so little ? How can I try to recover them ?

Thanks