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.