diff --git a/obmc-flash-bmc b/obmc-flash-bmc
index ab353bf..07e730e 100644
--- a/obmc-flash-bmc
+++ b/obmc-flash-bmc
@@ -317,6 +317,12 @@
   fi
 }
 
+umount_static_alt() {
+  altFs=$1
+  altFsMount="/run/media/${altFs}"
+  umount "${altFsMount}"
+}
+
 # Read the current env variable and set it on the alternate boot env
 copy_env_var_to_alt() {
   varName=$1
@@ -707,6 +713,9 @@
   static-altfs)
     mount_static_alt "$2" "$3" "$4"
     ;;
+  umount-static-altfs)
+    umount_static_alt "$2"
+    ;;
   *)
     echo "Invalid argument"
     exit 1