Finally I found the issue and made it working.FATFS (Advanced Settings)---- I have enabled the DMA templete for FATFS.SDIO(DMA Settings) ----Added SDIO_TX(DMA Stram3) and SDIO_RX(DMA2 STram 6) for DMA configuration.SDIO(NVICSettings) -- then enabled ...

I am also facing same problem, once I enable freeRTOS my fatfs not mounting even after heap and stack size set to 0x2000. Any solution or any update on this?