diff --git a/build/build.tcl b/build/build.tcl
index 77700b78..f447fa6f 100644
--- a/build/build.tcl
+++ b/build/build.tcl
@@ -119,7 +119,7 @@ respond "*" "purify\033g"
 respond "*" ":pdump sys;atsign ddt\r"
 respond "*" ":kill\r"
 
-respond "*" ":midas .;_system;its\r"
+respond "*" ":midas dsk0:.;_system;its\r"
 its_switches
 expect ":KILL"
 
@@ -262,7 +262,7 @@ respond "time-sharing?" "y\r"
 expect ":KILL"
 
 # magdmp
-respond "*" ":midas .;_syseng;magdmp\r"
+respond "*" ":midas dsk0:.;_syseng;magdmp\r"
 respond "PTRHRI=" "y\r"
 respond "KL10P=" "n\r"
 respond "TM10BP=" "n\r"
@@ -1027,7 +1027,7 @@ respond "\n" "CHEOPS==0\r\003"
 expect ":KILL"
 
 # Spacewar, standalone
-respond "*" ":midas /t .;@ spcwar_spcwar; newwar\r"
+respond "*" ":midas /t dsk0:.;@ spcwar_spcwar; newwar\r"
 respond "with ^C" "APR==0\r"
 respond "\n" "PI==4\r"
 respond "\n" "DIS==130\r\003"
@@ -1053,7 +1053,7 @@ respond "with ^C" "APR==0\r"
 respond "\n" "PI==4\r"
 respond "\n" "DIS==130\r\003"
 expect ":KILL"
-respond "*" ":midas /t .;@ mlife_rwg;mlife\r"
+respond "*" ":midas /t dsk0:.;@ mlife_rwg;mlife\r"
 respond "with ^C" "TS==0\r"
 respond "\n" "APR==0\r"
 respond "\n" "PI==4\r"
@@ -1219,7 +1219,7 @@ respond "*" ":midas sys3;ts create_syseng;create\r"
 expect ":KILL"
 respond "*" ":link sys1;ts plan,sys3;ts create\r"
 
-respond "*" ":midas /t .;@ pt_syseng;pt\r"
+respond "*" ":midas /t dsk0:.;@ pt_syseng;pt\r"
 respond "with ^C" "pi==4\r"
 respond "\n" "tty==120\r"
 respond "\n" "ptr==104\r"
diff --git a/build/ka10/include.tcl b/build/ka10/include.tcl
index 924fe504..f61f80b7 100644
--- a/build/ka10/include.tcl
+++ b/build/ka10/include.tcl
@@ -36,7 +36,7 @@ proc its_switches {} {
 }
 
 proc make_ntsddt {} {
-    respond "*" ":midas .;@ ddt_system;ddt\r"
+    respond "*" ":midas dsk0:.;@ ddt_system;ddt\r"
     respond "cpusw=" "0\r"
     respond "ndsk=" "0\r"
     respond "dsksw=" "0\r"
@@ -44,14 +44,14 @@ proc make_ntsddt {} {
 }
 
 proc make_salv {} {
-    respond "*" ":midas .;@ salv_system;salv\r"
+    respond "*" ":midas dsk0:.;@ salv_system;salv\r"
     respond "time-sharing?" "n\r"
     respond "machine?" "KA\r"
     expect ":KILL"
 }
 
 proc make_dskdmp {} {
-    respond "*" ":midas .;@ dskdmp_system;dskdmp\r"
+    respond "*" ":midas dsk0:.;@ dskdmp_system;dskdmp\r"
     expect "Configuration"
     respond "?" "ASK\r"
     respond "HRIFLG=" "N\r"
@@ -73,12 +73,10 @@ proc dump_switches {} {
 }
 
 proc dump_nits {} {
-    respond "DSKDMP" "l\0331\033"
-    respond "\n" "l\033ddt\r"
+    respond "DSKDMP" "l\033ddt\r"
     expect "\n"; type "t\033@ dskdmp\r"
     expect "\n"; type "\033g"
-    respond "DSKDMP" "l\0331\033"
-    respond "\n" "t\033its bin\r"
+    respond "DSKDMP" "t\033its bin\r"
     expect "\n"; type "\033u"
     respond "DSKDMP" "m\033@ salv\r"
     expect "\n"; type "d\033nits\r"
diff --git a/build/ks10/include.tcl b/build/ks10/include.tcl
index 376f3783..5cb2909a 100644
--- a/build/ks10/include.tcl
+++ b/build/ks10/include.tcl
@@ -81,26 +81,26 @@ proc its_switches {} {
 }
 
 proc make_ntsddt {} {
-    respond "*" ":midas .;@ ddt_system;ddt\r"
+    respond "*" ":midas dsk0:.;@ ddt_system;ddt\r"
     respond "cpusw" "3\r"
     respond "New One Proceed" "1\r"
     expect ":KILL"
 }
 
 proc make_salv {} {
-    respond "*" ":midas .;_kshack;nsalv\r"
+    respond "*" ":midas dsk0:.;_kshack;nsalv\r"
     respond "Which machine?" "KSRP06\r"
     expect ":KILL"
 }
 
 proc make_dskdmp {} {
-    respond "*" ":midas .;_system;dskdmp\r"
+    respond "*" ":midas dsk0:.;_system;dskdmp\r"
     expect "Configuration"
     respond "?" "ksrp06\r"
     respond "Assemble BOOT?" "no\r"
     expect ":KILL"
 
-    respond "*" ":midas .;bt_system;dskdmp\r"
+    respond "*" ":midas dsk0:.;bt_system;dskdmp\r"
     expect "Configuration"
     respond "?" "ksrp06\r"
     respond "Assemble BOOT?" "yes\r"