diff --git a/host/montalin.nix b/host/montalin.nix
index 262a392..266e9c7 100644
--- a/host/montalin.nix
+++ b/host/montalin.nix
@@ -29,6 +29,11 @@
 
   swapDevices = [{ device = "/dev/mapper/swap"; }];
 
+  # Get disk identifier with `udevadm info -n /dev/sdX | grep ID_SERIAL_SHORT`
+  services.udev.extraRules = ''
+    ACTION=="add", KERNEL=="sd[a-z]", ENV{ID_SERIAL_SHORT}=="WD-WXH1A89L54LA", RUN+="${pkgs.hdparm}/bin/hdparm -S 60 /dev/%k"
+  '';
+
   # Use the systemd-boot EFI boot loader.
   boot.loader.systemd-boot.enable = true;
   boot.loader.efi.canTouchEfiVariables = true;