diff --git a/btree_standardVFS.cpp b/btree_standardVFS.cpp
index d843b48..c5e8484 100644
--- a/btree_standardVFS.cpp
+++ b/btree_standardVFS.cpp
@@ -32,19 +32,21 @@
 } // StandardVFS::fOpen
 
 bool  
-StandardVFS::fRead(void *, uInt32) { 
-  return false; 
+StandardVFS::fRead(void * buf, uInt32 count) { 
+  size_t result = fread(buf, 1, count, dataFile);
+  return (result == count);
 } // StandardVFS::fRead
 
 bool  
 StandardVFS::fSeek(uInt32 offset) { 
   int result = fseek(dataFile, offset, SEEK_SET);
-  return result != EOF ? true : false;
+  return (result != EOF);
 } // StandardVFS::fSeek
 
 bool  
-StandardVFS::fWrite(void *, uInt32) { 
-  return false; 
+StandardVFS::fWrite(void * buf, uInt32 count) { 
+  size_t result = fwrite(buf, 1, count, dataFile);
+  return (result == count);
 } // StandardVFS::fWrite
 
 StandardVFS::~StandardVFS(void) {