diff --git a/nix/nixos-module/server/server1.nix b/nix/nixos-module/server/server1.nix
index d841c43..7db5923 100644
--- a/nix/nixos-module/server/server1.nix
+++ b/nix/nixos-module/server/server1.nix
@@ -1,15 +1,12 @@
 { config, ... }:
 
 {
-  boot.loader.grub.enable = true;
-  boot.loader.grub.version = 2;
-  boot.loader.grub.devices = [
-    "/dev/disk/by-path/pci-0000:05:00.0-scsi-0:1:0:0"
-    "/dev/disk/by-path/pci-0000:05:00.0-scsi-0:1:0:1"
-  ];
+  # Use the systemd-boot EFI boot loader.
+  boot.loader.systemd-boot.enable = true;
+  boot.loader.efi.canTouchEfiVariables = true;
 
   networking.hostName = "server1"; # Define your hostname.
-  networking.hostId = "12345678";
+  networking.hostId = "01010101";
 
   boot.initrd.availableKernelModules = [ "uhci_hcd" "ehci_pci" "ata_piix" "hpsa" "usb_storage" "usbhid" "sd_mod" "sr_mod" ];
   boot.initrd.kernelModules = [ ];