diff --git a/README.md b/README.md
index ba22075..ebc9d21 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,7 @@ Installation
 - cd nodes/hosts/[systemname]
 - sudo nix --experimental-features "nix-command flakes" run github:nix-community/disko/latest -- --mode destroy,format,mount ./disk-config.nix
 - mount | grep /mnt
+- sudo btrfs subvolume snapshot -r /mnt /mnt/root-blank
 - sudo btrfs subvolume list /mnt
 - sudo btrfs property get -ts /mnt/root-blank
 - cd ~/nixverse