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 sys(CMD)                        19 June 1992                        sys(CMD)


 Name

    sys - copy system files and COMMAND.COM to the disk in a specified drive

 Syntax


    sys [drive1:][path] drive2:


 Description

    The two system files (IO.SYS and MSDOS.SYS) are hidden files and do not
    typically appear when you type the dir command.

 Parameters


    [drive1:][path]
              Specifies the location of the system files.  If you do not
              specify a path, MS-DOS searches the root directory on the
              current drive for the system files.

    drive2:   Specifies the drive to which you want to copy the system files.
              These files can be copied only to a root directory, not to a
              subdirectory.


 Notes


    How the sys command copies files

    The sys command copies the files in the following order:  IO.SYS,
    MSDOS.SYS, and COMMAND.COM.

    No requirement for contiguous files

    MS-DOS no longer requires the two system files to be contiguous.  This
    means that when you want to copy a new version of MS-DOS to a disk con-
    taining system files for MS-DOS version 3.3 or earlier, you need not
    reformat the disk.

    Using the sys command on assigned drives and networks

    The sys command does not work on drives that have been redirected by
    using the assign, join, or subst command.  sys also does not work on net-
    work drives.

 Examples

    To copy the MS-DOS system files and command interpreter from the disk in
    the current drive to a disk in drive A, type the following command:

       sys a:


    To copy the MS-DOS system files and command interpreter from the disk in
    drive D to a disk in drive A, type the following the command:

       sys d:\ a:


 Related commands

    For information about copying files, see the copy(CMD) and xcopy(CMD)
    commands.