grub: search

 
 16.3.65 search
 --------------
 
  -- Command: search [--file|--label|--fs-uuid] [--set [var]]
           [--no-floppy] name
      Search devices by file ('-f', '--file'), filesystem label ('-l',
      '--label'), or filesystem UUID ('-u', '--fs-uuid').
 
      If the '--set' option is used, the first device found is set as the
      value of environment variable VAR.  The default variable is 'root'.
 
      The '--no-floppy' option prevents searching floppy devices, which
      can be slow.
 
      The 'search.file', 'search.fs_label', and 'search.fs_uuid' commands
      are aliases for 'search --file', 'search --label', and 'search
      --fs-uuid' respectively.