XCOPY
  
Copies directories, their subdirectories, and files (except hidden and 
system files). 
  
With this command, you can copy all the files in a directory, including 
the files in the subdirectories of that directory. 
  
Syntax 
  
    XCOPY source [destination] [/Y|/-Y] [/A|/M] [/D:date] [/P] [/S] 
    [/E] [/V] [/W] 
  
Parameters 
  
source 
    Specifies the location and names of the files you want to copy. 
    Source must include either a drive or a path. 
  
destination 
    Specifies the destination of the files you want to copy. 
    Destination can include a drive letter and colon, a directory name, 
    a filename, or a combination. 
  
Switches 
  
/Y 
    Indicates that you want XCOPY to replace existing file(s) without 
    prompting you for confirmation. By default, if you specify an 
    existing file as the destination file, XCOPY will ask you if you 
    want to overwrite the existing file. (Previous versions of MS-DOS 
    would simply replace the existing file.) If the XCOPY command is 
    part of a batch file, XCOPY will behave as in previous versions. 
    Specifying this switch overrides all defaults and the current 
    setting of the COPYCMD environment variable. 
  
/-Y 
    Indicates that you want XCOPY to prompt you for confirmation when 
    replacing an existing file. Specifying this switch overrides all 
    defaults and the current setting of the COPYCMD environment 
    variable. 
  
/A 
    Copies only source files that have their archive file attributes 
    set. This switch does not modify the archive file attribute of the 
    source file. For information about how to set the archive file 
    attribute, see the ATTRIB command. 
  
/M 
    Copies source files that have their archive file attributes set. 
    Unlike the /A switch, the /M switch turns off archive file 
    attributes in the files specified in source. For information about 
    how to set the archive file attribute, see the <ATTRIB> command. 
  
/D:date 
    Copies only source files modified on or after the specified date. 
    Note that the format of date depends on the COUNTRY setting you are 
    using. 

NOTE: Using XCOPY command can easily copy lots of files contained in a 
directory and/or in its subdirectory. Additionally, XCOPY command from 
MS-DOS 3.x, Windows 98SE/Me/NT/2000 supports a special switch "/H". Using 
this switch, you can copy a hidden file without removing its hidden 
attribute. This is especially useful when you are 
copying files from a CDROM. I don't know why Microsoft removed this 
feature from XCOPY in MS-DOS version 6.x and Windows 95/98.

If you want to be a professional person in using MS-DOS or Windows 
Command Prompt, you should master this command. You can copy lots of 
files using XCOPY with ease.

For more information, please refer to MS-DOS Help or Windows NT command 
line command help.