diff --git a/.gitignore b/.gitignore
index 7cf5001..045c54d 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 *.bin
 *.img
+img.d/
\ No newline at end of file
diff --git a/Makefile b/Makefile
index 07db89e..1b481dc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,10 @@
 disk.img: boot.bin kernel.bin
-	cat boot.bin kernel.bin > disk.img
+	dd if=/dev/zero of=disk.img count=43 bs=100k
+	dd if=boot.bin of=disk.img conv=notrunc
+	mount disk.img img.d
+	cp kernel.bin img.d
+	umount img.d
+	chmod 777 disk.img
 
 boot.bin: boot.asm
 	nasm boot.asm -o $@