diff --git a/src/InternalStorage.cpp b/src/InternalStorage.cpp
index e61f2dc..09c2b21 100644
--- a/src/InternalStorage.cpp
+++ b/src/InternalStorage.cpp
@@ -57,12 +57,14 @@ int InternalStorage::begin(){
         int err = this -> userDataFileSystem -> mount(this -> userData);
   
         if(err == 0) return 1;
+    #else
+        return 0;
     #endif
 }
 
 int InternalStorage::unmount(){
      int err = this -> userDataFileSystem -> unmount();
-     if(err == 0) return 1;
+     return err == 0 ? 1 : 0;
 }
 
 Folder InternalStorage::getRootFolder(){
diff --git a/src/InternalStorage.h b/src/InternalStorage.h
index 3bd7ba5..b3d35c1 100644
--- a/src/InternalStorage.h
+++ b/src/InternalStorage.h
@@ -107,7 +107,7 @@ class InternalStorage : public Arduino_UnifiedStorage {
         #endif
 
 
-        char * partitionName = "user";
+        char * partitionName = (char *) "user";
         FileSystems fs = FS_FAT;
 };
 
diff --git a/src/SDStorage.cpp b/src/SDStorage.cpp
index 94ad710..8c2e798 100644
--- a/src/SDStorage.cpp
+++ b/src/SDStorage.cpp
@@ -14,7 +14,7 @@ int SDStorage::begin(){
 
 int SDStorage::begin(FileSystems fs){
   this -> fs = fs;
-  this -> begin();
+  return this -> begin();
 }
 
 int SDStorage::unmount(){
diff --git a/src/USBStorage.cpp b/src/USBStorage.cpp
index f1268e2..b2c97f8 100644
--- a/src/USBStorage.cpp
+++ b/src/USBStorage.cpp
@@ -18,7 +18,7 @@ USBStorage::USBStorage(){
 
 int USBStorage::begin(FileSystems fs){
   this -> fs = fs;
-  this -> begin();
+  return this -> begin();
 }
 
 int USBStorage::begin(){