diff --git a/Makefile b/Makefile
index d564f76..61f3b48 100644
--- a/Makefile
+++ b/Makefile
@@ -87,6 +87,9 @@ part.img: fatc.bs $(DISTFILES)
 	mcopy -i $@ $(DISTFILES) ::rdos
 	mattrib -i $@ +s ::rdos ::rdos/kernel.bs
 
+hdd.img: part.img mbr.bs
+	cat $< > $@
+
 clean:
 	rm -f *.com *.bs *.0 *.lst *.img *.bin *.rom
 	rm -rf utils
@@ -94,8 +97,8 @@ clean:
 qemu-floppy: fdimage.img $(ROMS)
 	$(QEMU) $(QEMU_ARGS) -boot a -fda fdimage.img
 
-qemu-hdd: part.img $(ROMS)
-	$(QEMU) $(QEMU_ARGS) -boot c -hda part.img
+qemu-hdd: hdd.img $(ROMS)
+	$(QEMU) $(QEMU_ARGS) -boot c -hda hdd.img
 
 qemu-pxe: pxeboot.0 $(ROMS)
 	$(QEMU) $(QEMU_ARGS) -boot n \