I wish to rename the directory "/backup" to "/backup.new". / is on a 452G partition with 54% in use. / is owned by root. /backup is owned by normal user "rh". The command "$ mv /backup/ /newbackup/" fails with " cannot move ... Permission denied". The command "# mv /backup/ /newbackup/" fails with "cannot move ... Device or resource busy". No application and no terminal window is looking at / or at /backup . What am I overlooking? RH