Originally Posted by amani
ICEauthority in /home/username directory.
As I said, all users and data files disappeared. There was no /home/username directory. The directory and its contents simply vanished. I know the ICEauthority file is stored in the user directory, but what happened to the user directory? It disappeared with all of its contents (including the ICEauthority file).
Thank you for taking the trouble to reply, but in the meantime (a week has gone by) I have used "Photo Rec" software to recover my files quite successfully, although the original file names were lost, and have reinstalled Linux from scratch.
I don't know what happened. I have searched high and low but have found no explanation for this problem. It has meant a lot of wasted time, although luckily I have been able to recover my user data files.