# mfsDiskIdCheck

    Format:

    s32 mfsDiskIdCheck(void)

    Arguments:None

    Return value:Error

    Function:	Reads and checks disk ID

    Description:	This function reads the disk ID and compares it with the previously read disk ID.
    If the disk has been exchanged, MFS_ERR_DISKCHANGE is returned.
    The disk ID that was read is stored in the global variable mfsDiskInfo structure.  Please reference this global variable is necessary.