diff --git a/build/simh/build.tcl b/build/simh/build.tcl
index fb206484..a2384488 100644
--- a/build/simh/build.tcl
+++ b/build/simh/build.tcl
@@ -13,6 +13,7 @@ proc restart_nsalv {} {
 }
 
 proc start_dskdmp {} {
+    respond "sim>" "at tu2 out/dskdmp.tape\r"
     respond "sim>" "b tu2\r"
     respond "MTBOOT" "\033g"
 }
diff --git a/build/simh/init b/build/simh/init
index 1a852a0a..3b37f0b7 100644
--- a/build/simh/init
+++ b/build/simh/init
@@ -2,6 +2,5 @@ set cpu its
 set tim y2k
 at tu0 out/minsys.tape
 at tu1 out/salv.tape
-at tu2 out/dskdmp.tape
 set rp0 rp06
 at rp0 out/rp0.dsk