diff --git a/fatfs/diskio.c b/fatfs/diskio.c
index 9229566d..aa50d7f0 100644
--- a/fatfs/diskio.c
+++ b/fatfs/diskio.c
@@ -172,7 +172,8 @@ DRESULT disk_ioctl (
 #endif
 
 		// Process of the command for the ATA drive
-#error "notimpl"
+		if(cmd==CTRL_SYNC)
+			res=RES_OK;
 		return res;
 
 #ifdef CFG_HAVE_SD
diff --git a/fatfs/diskio.h b/fatfs/diskio.h
index 26f127e8..9ca0c7e1 100644
--- a/fatfs/diskio.h
+++ b/fatfs/diskio.h
@@ -10,7 +10,7 @@ extern "C" {
 #endif
 
 #define _USE_WRITE	1	/* 1: Enable disk_write function */
-#define _USE_IOCTL	0	/* 1: Enable disk_ioctl fucntion */
+#define _USE_IOCTL	1	/* 1: Enable disk_ioctl fucntion */
 
 #include "integer.h"