diff --git a/dll/win32/msi/dialog.c b/dll/win32/msi/dialog.c
index 376fa49..f84b2f8 100644
--- a/dll/win32/msi/dialog.c
+++ b/dll/win32/msi/dialog.c
@@ -3220,7 +3220,7 @@ static void msi_dialog_vcl_add_drives( msi_dialog *dialog, msi_control *control
     WCHAR cost_text[MAX_PATH];
     LPWSTR drives, ptr;
     LVITEMW lvitem;
-    DWORD size;
+    DWORD size, flags;
     int i = 0;
 
     cost = msi_vcl_get_cost(dialog);
@@ -3237,6 +3237,13 @@ static void msi_dialog_vcl_add_drives( msi_dialog *dialog, msi_control *control
     ptr = drives;
     while (*ptr)
     {
+        if (GetVolumeInformationW(ptr, NULL, 0, NULL, 0, &flags, NULL, 0) &&
+            flags & FILE_READ_ONLY_VOLUME)
+        {
+            ptr += lstrlenW(ptr) + 1;
+            continue;
+        }
+
         lvitem.mask = LVIF_TEXT;
         lvitem.iItem = i;
         lvitem.iSubItem = 0;