Index: /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlExec.cpp
===================================================================
--- /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlExec.cpp	(revision 35011)
+++ /trunk/src/VBox/Additions/common/VBoxService/VBoxServiceControlExec.cpp	(revision 35012)
@@ -104,5 +104,5 @@
     {
         size_t cbToWrite = pStdInBuf->cbSize - pStdInBuf->cbOffset;
-        cbToWrite = RT_MIN(cbToWrite, _64K);
+        cbToWrite = RT_MIN(cbToWrite, _1M);
         *pfClose = false;
         if (cbToWrite && pStdInBuf->fAlive)
@@ -1722,5 +1722,5 @@
             AssertPtr(pData);
 
-            const uint32_t cbSize = _64K;
+            const uint32_t cbSize = _1M;
             uint32_t cbRead = cbSize;
             uint8_t *pBuf = (uint8_t*)RTMemAlloc(cbSize);