diff --git a/README.md b/README.md
index fd2fffb..043cdc7 100644
--- a/README.md
+++ b/README.md
@@ -59,7 +59,7 @@ Prerequisites: the `vault` command installed on the workstation.
 
 ### Start a local Vault server
 
-Vault dev mode keeps all data in memory, and a dev server cannot be restarted on existing file storage. The local server therefore runs in normal mode with file storage in the gitignored `vault-data` directory.
+The local Vault server stores its data in files in the gitignored `vault-data` directory, so the CA survives restarts. The server starts sealed, is initialized once, and must be unsealed after every start.
 
 Create `vault.hcl`, replacing the path with the absolute path of the `vault-data` directory: