diff --git a/README.md b/README.md
index 4d46ef7..2515835 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,8 @@ It also handles checksum verification using signify and cksum.
 sudo dnf install qemu-system-riscv-core make curl tar signify qemu-img
 ```
 
+Keep in mind that sd1 is the disk you want to install OpenBSD on.
+
 ```sh
 make installer # Launch qemu with the OpenBSD installer image attached
 make run # Launch qemu with the qcow2