diff --git a/README.md b/README.md
index 68985603..8596d663 100644
--- a/README.md
+++ b/README.md
@@ -35,6 +35,7 @@ from scratch.
    - Exec DDT, standalone debugger.
    - TECO, editor.
    - DUMP, tape backup and restore.
+   - NSALV, standalone file system tool.
    - PDSET, set time and date.
    - KSFEDR, manipulate front-end file system.
    - LOCK, shut down system.
diff --git a/build/build.tcl b/build/build.tcl
index 28d68711..7129fb87 100644
--- a/build/build.tcl
+++ b/build/build.tcl
@@ -150,6 +150,10 @@ expect ":KILL"
 respond "*" ":delete sys;ts dump\r"
 respond "*" ":link sys;ts dump,sysbin;dump bin\r"
 
+respond "*" ":midas .;_kshack;nsalv\r"
+respond "Which machine?" "KSRP06\r"
+expect ":KILL"
+
 respond "*" ":midas sysbin;_sysen1;pdset\r"
 expect ":KILL"
 respond "*" ":delete sys;ts pdset\r"