This sounds like a question for michaaa62 Just a guess: all other files under MyDocs are gone, too? Maybe on removal of USB the MyDocs did not get mounted correctly. /home/user/MyDocs is just a mount point for eMMC partition. So the data now resides on the home partition. If I am right after a reboot you will only see the old data, not the new one. Where.did.you.copy.the.new.music.to? As you said after moving from already copied-over files to MyDocs/.sounds.