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Function 41h            Delete File (UNLINK)

    Deletes a specified file.

        Entry   AH    = 41h
                DS:DX = Pointer to filespec (ASCIIZ string)

        Return  AX = Error code, if CF is set
                     | 02h File not found
                     | 03h Path not found
                     | 05h Access denied

    ------------------------------------------------------------------

    This function removes the directory entry for the file whose
    pathname is given in the zero-ended string pointed to by DS:DX.
    Wildcard characters cannot be used in the pathname specification.

    Note
    Deleting an open file may result in corruption of the file system.

    This function cannot be used to remove a directory, a volume
    label, or a read-only file. A program can use function 4301h to
    change the attributes of a read-only file so that the file can be
    deleted.