diff --git a/keys/tvb.backyard.pub b/keys/tvb.backyard.pub
index d92d276..5869038 100644
--- a/keys/tvb.backyard.pub
+++ b/keys/tvb.backyard.pub
@@ -1 +1 @@
-ssh-rsa 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 tvb@backyard
+ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAIGYv5vs78+UAeRagopi4BuvmmK1l3zZwQPY3R4rnp7oV tvb@backyard
diff --git a/machine/backyard/default.nix b/machine/backyard/default.nix
index 45f0104..7b00036 100644
--- a/machine/backyard/default.nix
+++ b/machine/backyard/default.nix
@@ -5,9 +5,9 @@
     ./hardware-configuration.nix
   ];
 
-  boot.loader = {
-    systemd-boot.enable = true;
-    efi.canTouchEfiVariables = true;
+  boot.loader.grub = {
+    enable = true;
+    device = "/dev/sda";
   };
 
   beatific.hostName = "backyard";
diff --git a/machine/backyard/hardware-configuration.nix b/machine/backyard/hardware-configuration.nix
index d7ec2a7..d7426e7 100644
--- a/machine/backyard/hardware-configuration.nix
+++ b/machine/backyard/hardware-configuration.nix
@@ -14,22 +14,12 @@
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/dd02cbda-2dd1-450d-9ece-92965ea3c3b8";
+    { device = "/dev/disk/by-uuid/798089ca-f249-431d-aa08-65909b85a184";
       fsType = "ext4";
     };
 
-  fileSystems."/nix" =
-    { device = "/dev/disk/by-uuid/0d031c2d-e66e-41d2-906f-1955b5a26f23";
-      fsType = "ext4";
-    };
-
-  fileSystems."/boot" =
-    { device = "/dev/disk/by-uuid/971B-96E8";
-      fsType = "vfat";
-    };
-
   swapDevices =
-    [ { device = "/dev/disk/by-uuid/f55dc7e7-eeec-4be6-88e4-f3e94e749fd2"; }
+    [ { device = "/dev/disk/by-uuid/5d55f9b7-cde3-403d-9c91-61c4b68c71f9"; }
     ];
 
   # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
@@ -38,7 +28,6 @@
   # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
   networking.useDHCP = lib.mkDefault true;
   # networking.interfaces.eno1.useDHCP = lib.mkDefault true;
-  # networking.interfaces.wlp0s20f0u14.useDHCP = lib.mkDefault true;
 
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
   powerManagement.cpuFreqGovernor = lib.mkDefault "powersave";