diff --git a/lib/make/ᐅᖓᕙᕆᐊᖅᓯᓂᖅ/mb_os.mk b/lib/make/ᐅᖓᕙᕆᐊᖅᓯᓂᖅ/mb_os.mk
index 8485a80..a6663bd 100644
--- a/lib/make/ᐅᖓᕙᕆᐊᖅᓯᓂᖅ/mb_os.mk
+++ b/lib/make/ᐅᖓᕙᕆᐊᖅᓯᓂᖅ/mb_os.mk
@@ -42,10 +42,16 @@ endif
 endif
 
 
-define mb-os-file-create
-$(MB_ᕽᕽᕽ　　　)echo "" > $(1)
+define mb-os-file-empty
+$(MB_ᕽᕽᕽ　　　)$(file >$(1))
 endef
-$(call mb-make-call,mb-doc-function,mb-os-file-create,"Creates an empty file.","<file>")
+$(call mb-make-call,mb-doc-function,mb-os-file-empty,"Makes an file empty.","<file>")
+
+
+define mb-os-file-append
+$(MB_ᕽᕽᕽ　　　)$(file >>$(1),$(2))
+endef
+$(call mb-make-call,mb-doc-function,mb-os-file-append,"Appends text to an file","<file> <text>")
 
 
 define mb-os-file-copy
diff --git a/lib/make/天房系統擴展/mb_autoexec.mk b/lib/make/天房系統擴展/mb_autoexec.mk
index 2231e3e..c083d59 100644
--- a/lib/make/天房系統擴展/mb_autoexec.mk
+++ b/lib/make/天房系統擴展/mb_autoexec.mk
@@ -156,7 +156,7 @@ endef
 
 define mb-autoexec-write-default
 $(MB_ᕽᕽᕽ　　　)$(call mb-make-call,mb-os-echo-remark,$(MB_I18N_AUTOEXEC_WRITE) $@)
-$(MB_ᕽᕽᕽ　　　)@echo -n "" > $(1)/autoexec.bat
+$(MB_ᕽᕽᕽ　　　)$(call mb-make-call,mb-os-file-empty,$(1)/autoexec.bat)
 $(MB_ᕽᕽᕽ　　　)$(if $(wildcard $(1)/utils),$(call mb-make-call,_mb-autoexec-write-preboot,$(1),utils\,$(2),$(3)),$(call mb-make-call,_mb-autoexec-write-preboot,$(1),,$(2),$(3)))
 $(MB_ᕽᕽᕽ　　　)$(if $(filter on,$(MB_AUTOEXEC_SHOW_HOST)),$(call mb-make-call,mb-autoexec-append-cmd,$(1),omsxctl boot_exec_show_host))
 $(MB_ᕽᕽᕽ　　　)$(if $(MB_AUTOEXEC_STARTUP_NOTE),$(call mb-make-call,mb-autoexec-append-echo,$(1),mb::note $(MB_AUTOEXEC_STARTUP_NOTE)))