Index: reactos/dll/win32/msi/dialog.c
===================================================================
--- reactos/dll/win32/msi/dialog.c	(revision 74135)
+++ reactos/dll/win32/msi/dialog.c	(working copy)
@@ -3165,13 +3165,15 @@
                 MSICOSTTREE_SELFONLY, INSTALLSTATE_LOCAL, &each_cost)))
         {
             /* each_cost is in 512-byte units */
             total_cost += ((LONGLONG)each_cost) * 512;
+TRACE("%d %s\n", each_cost, debugstr_w(L"=+EachCost") );
         }
         if (ERROR_SUCCESS == (MSI_GetFeatureCost(dialog->package, feature,
                 MSICOSTTREE_SELFONLY, INSTALLSTATE_ABSENT, &each_cost)))
         {
             /* each_cost is in 512-byte units */
             total_cost -= ((LONGLONG)each_cost) * 512;
+TRACE("%d %s\n", each_cost, debugstr_w(L"=-EachCost") );
         }
     }
     return total_cost;
@@ -3202,6 +3204,10 @@
     ptr = drives;
     while (*ptr)
     {
+        INT dt = GetDriveTypeW(ptr);
+TRACE("%d %s %s\n", dt, debugstr_w(L"=DriveType"), debugstr_w(ptr));
+        if (dt != 5)
+        {
         lvitem.mask = LVIF_TEXT;
         lvitem.iItem = i;
         lvitem.iSubItem = 0;
@@ -3234,7 +3240,7 @@
         lvitem.pszText = size_text;
         lvitem.cchTextMax = lstrlenW(size_text) + 1;
         SendMessageW( control->hwnd, LVM_SETITEMW, 0, (LPARAM)&lvitem );
-
+        }
         ptr += lstrlenW(ptr) + 1;
         i++;
     }
Index: reactos/dll/win32/msi/install.c