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Problem in SDcard with the FatFS

GHugh.11
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I been having trouble with mounting a SDcard with the FatFS. The mount fails every time with "FR_NOT_READY". I using a Nucleo-F746ZG board, All code generated from STM32CubeMX v5.3.0, SDIO wide bus 4bits. The SDcard is a 1GB, formatted as FAT

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