Why did the folder become invisible after the external USB drive hung up, but it is visible in the search?

Question

linux

Worked with an external drive. Sodal file and renamed it and at that time the disk turned off and turned back on, but all the contents of this folder were gone. At the same time, from memory, I enter the names of the files into the search, find them there in the same folder, go into it, everything works, but I return to the folder in which this buggy is located - and it is not there. Some kind of mystic. I checked in the hidden ones - it's not there. And in the search - there is. What the heck?

Answer 1

What does ls output in a directory? And show the path to the mount point.