Today, I opened my music player to play a particular song, and couldn't find it. So I check the filesystem - the entire folder for that album is missing. I did a count of the entire contents of the directory - 226 total files there. Yesterday there were 228. What happened to them? I definitely didn't delete them.
This sounds very similar to this question, except that I don't drag and drop things - I exclusively use the command line. Their problem happened when trying to drag and drop (i.e. move) a folder, while my files vanishes without me doing anything involving them. I don't even know what the other missing folder was - I don't remember the names of all 228 folders, so all I know is that one is missing, not which one it is. Is there any way to find that out?
I also noticed that my s.m.a.r.t check is reporting a high reallocated sector count, implying that my disk might be failing soon - is it possible that disappearing files are a symptom of incipient disk failure?