diff --git a/stage2/arm9/source/fatfs/diskio.c b/stage2/arm9/source/fatfs/diskio.c
index 63a6a10..e0735ea 100644
--- a/stage2/arm9/source/fatfs/diskio.c
+++ b/stage2/arm9/source/fatfs/diskio.c
@@ -41,8 +41,8 @@ DSTATUS disk_initialize (
 
         if(sdmmcInitResult == 4) sdmmcInitResult = sdmmc_sdcard_init();
 
-	return ((pdrv == SDCARD && !(sdmmcInitResult & 2)) ||
-                (pdrv == CTRNAND && !(sdmmcInitResult & 1) && !ctrNandInit())) ? 0 : STA_NOINIT;
+    return ((pdrv == SDCARD && !(sdmmcInitResult & 2)) ||
+            (pdrv == CTRNAND && !(sdmmcInitResult & 1) && !ctrNandInit())) ? 0 : STA_NOINIT;
 }
 
 
@@ -61,8 +61,8 @@ DRESULT disk_read (
 	UINT count		/* Number of sectors to read */
 )
 {
-        return ((pdrv == SDCARD && !sdmmc_sdcard_readsectors(sector, count, buff)) ||
-                (pdrv == CTRNAND && !ctrNandRead(sector, count, buff))) ? RES_OK : RES_PARERR;
+    return ((pdrv == SDCARD && !sdmmc_sdcard_readsectors(sector, count, buff)) ||
+            (pdrv == CTRNAND && !ctrNandRead(sector, count, buff))) ? RES_OK : RES_PARERR;
 }
 
 
@@ -83,7 +83,7 @@ DRESULT disk_write (
 	UINT count			/* Number of sectors to write */
 )
 {
-        return (pdrv == SDCARD && !sdmmc_sdcard_writesectors(sector, count, buff)) ? RES_OK : RES_PARERR;
+    return (pdrv == SDCARD && (*(vu16 *)(SDMMC_BASE + REG_SDSTATUS0) & TMIO_STAT0_WRPROTECT) != 0 && !sdmmc_sdcard_writesectors(sector, count, buff)) ? RES_OK : RES_PARERR;
 }
 #endif
 
@@ -103,6 +103,6 @@ DRESULT disk_ioctl (
 	void *buff		/* Buffer to send/receive control data */
 )
 {
-	return RES_PARERR;
+    return cmd == CTRL_SYNC ? RES_OK : RES_PARERR;
 }
 #endif
diff --git a/stage2/arm9/source/fs.c b/stage2/arm9/source/fs.c
index 85960c1..9b3d7ab 100644
--- a/stage2/arm9/source/fs.c
+++ b/stage2/arm9/source/fs.c
@@ -3,7 +3,7 @@
 */
 
 #include "fs.h"
-#include <string.h>
+#include "memory.h"
 #include "fatfs/ff.h"
 
 static FATFS fs;
@@ -41,17 +41,18 @@ u32 fileRead(void *dest, const char *path, u32 size, u32 maxSize)
 bool fileWrite(const void *buffer, const char *path, u32 size)
 {
     FIL file;
+    FRESULT result;
 
     switch(f_open(&file, path, FA_WRITE | FA_OPEN_ALWAYS))
     {
         case FR_OK:
         {
             unsigned int written;
-            f_write(&file, buffer, size, &written);
-            f_truncate(&file);
-            f_close(&file);
+            result = f_write(&file, buffer, size, &written);
+            if(result == FR_OK) result = f_truncate(&file);
+            result |= f_close(&file);
 
-            return (u32)written == size;
+            return result == FR_OK && (u32)written == size;
         }
         case FR_NO_PATH:
             for(u32 i = 1; path[i] != 0; i++)
@@ -60,16 +61,11 @@ bool fileWrite(const void *buffer, const char *path, u32 size)
                     char folder[i + 1];
                     memcpy(folder, path, i);
                     folder[i] = 0;
-                    f_mkdir(folder);
+                    result = f_mkdir(folder);
                 }
 
-            return fileWrite(buffer, path, size);
+            return result == FR_OK && fileWrite(buffer, path, size);
         default:
             return false;
     }
 }
-
-bool fileDelete(const char *path)
-{
-    return f_unlink(path) == FR_OK;
-}
diff --git a/stage2/arm9/source/fs.h b/stage2/arm9/source/fs.h
index 2280934..667f958 100644
--- a/stage2/arm9/source/fs.h
+++ b/stage2/arm9/source/fs.h
@@ -11,4 +11,3 @@ void unmountSd(void);
 bool mountCtrNand(void);
 u32 fileRead(void *dest, const char *path, u32 size, u32 maxSize);
 bool fileWrite(const void *buffer, const char *path, u32 size);
-bool fileDelete(const char *path);