diff --git a/hosts/arrow/default.nix b/hosts/arrow/default.nix
index fcc9da6..41852b4 100644
--- a/hosts/arrow/default.nix
+++ b/hosts/arrow/default.nix
@@ -3,6 +3,18 @@
 inputs.nixpkgs.lib.nixosSystem {
   system = "x86_64-linux";
   specialArgs = { };
-  modules = import ./modules.nix { inherit inputs globals overlays; };
+  modules = import ./modules.nix { inherit inputs globals overlays; } ++ [{
+    # This is the root filesystem containing NixOS
+    fileSystems."/" = {
+      device = "/dev/disk/by-label/nixos";
+      fsType = "ext4";
+    };
+
+    # This is the boot filesystem for Grub
+    fileSystems."/boot" = {
+      device = "/dev/disk/by-label/boot";
+      fsType = "vfat";
+    };
+  }];
 }