diff --git a/Makefile b/Makefile
deleted file mode 100644
index 4e7cea8..0000000
--- a/Makefile
+++ /dev/null
@@ -1,7 +0,0 @@
-.PHONY: all
-all:
-	@./rscons
-
-.PHONY: run
-run: all
-	qemu-system-x86_64 -bios OVMF.fd -hdb build/e.1/efi-loader.img
diff --git a/Rsconscript b/Rsconscript
index 1d1942a..88d8874 100644
--- a/Rsconscript
+++ b/Rsconscript
@@ -18,7 +18,7 @@ class Image < Builder
   end
 end
 
-env do |env|
+uefi_env = env "uefi" do |env|
   env.add_builder(Image)
   env["CC"] = "x86_64-w64-mingw32-gcc"
   env["CPPPATH"] += %w[/usr/include/efi /usr/include/efi/x86_64]
@@ -29,3 +29,7 @@ env do |env|
   env.Program("^/BOOTX64.EFI", "${sources}")
   env.Image("^/efi-loader.img", "^/BOOTX64.EFI")
 end
+
+task "run" do
+	sh %W[qemu-system-x86_64 -bios OVMF.fd -hda #{uefi_env.expand("^/efi-loader.img")}]
+end