diff --git a/01-bootsector-barebones/README.md b/01-bootsector-barebones/README.md
index a1458cf..b6a1778 100644
--- a/01-bootsector-barebones/README.md
+++ b/01-bootsector-barebones/README.md
@@ -50,6 +50,7 @@ To compile:
 `nasm -f bin boot_sect_simple.asm -o boot_sect_simple.bin`
 
 > OSX warning: if this drops an error, read chapter 00 again
+> Use `hexdump boot_sect_simple.bin` to show the hexadecimal dump of the compiled binary
 
 I know you're anxious to try it out (I am!), so let's do it: