It seems like you’re encountering issues while integrating FATFS with NOR flash memory on the STM32H563ZI, particularly when calling FF_CreateIOManager() and FF_Mount(). The error you’re facing is related to FATFS not recognizing the flash as being formatted. Before initializing FATFS, you need to ensure that the NOR flash is properly formatted with a valid FAT filesystem. Typically, FATFS requires a partition table and a correctly formatted filesystem (FAT16 or FAT32) to work properly. You might need to use a tool or software to manually format the NOR flash with a FAT filesystem if it hasn’t been done already. Once formatted, you should be able to initialize FATFS using FF_FlashDiskInit() and proceed with mounting and managing the file system. You can also check that the partition search is correctly identifying the NOR flash as a valid storage device by verifying the partition structure. Ensure that the read/write operations are correctly mapped to the NOR flash through the QuadSPI interface as well.