Be clear that it's a dummy

Just don't print stuff to a terminal that is not here

mess/tmpc.lua

@@ -41,6 +41,7 @@ if not drive then
         _pos = 0,
         _fp = fp,
         _state = "STOPPED",
+        isDummy = true,
         seek = function(howMuch)
             drive._pos = math.min(drive.getSize(), math.max(0, drive._pos + howMuch))
         end,
@@ -431,10 +432,12 @@ function()
                 end
             end
         elseif ev ~= "timer" then
-            local m = term.redirect(peripheral.wrap("right"))
-            io.write(ev .. " ")
-            pretty.print(pretty.pretty(evd))
-            term.redirect(m)
+            if drive.isDummy then
+                local m = term.redirect(peripheral.wrap("right"))
+                io.write(ev .. " ")
+                pretty.print(pretty.pretty(evd))
+                term.redirect(m)
+            end
         end
     end
 end,