defaulticon=path\iconname.ico
Specifies an absolute path on the compact disc to the file that contains the information for the icon. The icon represents the AutoPlay-enabled compact disc in the Windows user interface.
path\iconname.ico
Absolute path and file name of the file containing the icon information. You also can specify a .bmp, .exe, or .dll file. If a file contains more than one icon, specify the resource number (index) of the icon in the file to use.
If both the icon and defaulticon commands are present in an Autorun.inf file, AutoPlay uses the icon specified in the defaulticon command.
If the drive does not contain an AutoPlay-enabled compact disc, the system uses a default icon in its place.