diff --git a/Makefile b/Makefile
index 489054c..d22070f 100644
--- a/Makefile
+++ b/Makefile
@@ -13,6 +13,10 @@ cobj=$(csrc:%.c=%.o)
 kernel:$(asmobj) $(cobj) linker.ld
 	$(CXX) $(LDFLAGS) $(cobj) $(asmobj) -o $@ -T linker.ld
 
+fd.img: kernel
+	dd if=/dev/zero of=$@ bs=512 count=2880
+	dd if=$< of=$@ conv=notrunc
+
 #https://gcc.gnu.org/onlinedocs/gcc/x86-Function-Attributes.html#x86-Function-Attributes
 exception_handler.o:exception_handler.c
 	$(CC) $(CPPFLAGS) $(CFLAGS) -mgeneral-regs-only  -c $<