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.