diff --git a/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c b/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
index 0dc9e50..cbe94dd 100644
--- a/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
+++ b/FATFS/shimatta_sdio_driver/shimatta_sdio-driver.c
@@ -55,7 +55,27 @@ DRESULT SDIO_disk_write(const BYTE *buff, DWORD sector, UINT count){
 	return RES_OK;
 }
 DRESULT SDIO_disk_ioctl(BYTE cmd, void* buff){
-	return RES_OK;
+    DRESULT res = RES_OK;
+    switch(cmd) {
+    case GET_BLOCK_SIZE:
+        *((DWORD*)buff) = 0x01;
+        break;
+     case GET_SECTOR_SIZE:
+        *((WORD*)buff) = (1<<BLOCKSIZE);
+        break;
+     case GET_SECTOR_COUNT:
+        res = RES_ERROR;
+        //TODO: Implement
+        break;
+      case CTRL_SYNC:
+        res = RES_ERROR;
+        //TODO: Implement
+        break;
+     default:
+        res = RES_PARERR;
+     break;
+    }
+    return res;
 }
 DWORD __attribute__((weak)) get_fattime(){
 	return 0;
@@ -133,7 +153,7 @@ int SDIO_getResp(uint8_t expectedCMD, uint8_t typeOfAns, uint32_t *responseBuffe
 
     //Wait for error or success
     while (1) {
-        if (SDIO->STA & SDIO_STA_CMDREND) break; //Corrct Respone Received
+        if (SDIO->STA & SDIO_STA_CMDREND) break; //Correct Respone Received
 
         //Exclude ACMD41 from valid CRC check
         if ((SDIO->STA & SDIO_STA_CCRCFAIL)) {
@@ -151,9 +171,9 @@ int SDIO_getResp(uint8_t expectedCMD, uint8_t typeOfAns, uint32_t *responseBuffe
     //Valid Respone Received
     if ((SDIO->RESPCMD & SDIO_RESPCMD_RESPCMD) != expectedCMD) return -1; //Not the expected respose
 
-    //Correct Response
+    //If case of a correct Response
     *(responseBuffer++) = SDIO->RESP1;
-    //Long response. Never needed with SD Cards
+    //Long response.
     if (typeOfAns == LONG_ANS) {
         *(responseBuffer++) = SDIO->RESP2;
         *(responseBuffer++) = SDIO->RESP3;