diff --git a/configuration.nix b/configuration.nix
index a9ba3b8..67a0cee 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -1,74 +1,47 @@
 { config, lib, pkgs, ... }:
+
 {
   nix.settings.substituters = 
-  [ 
-    "https://mirrors.ustc.edu.cn/nix-channels/store" 
-  ];
-  nix.settings.trusted-public-keys = [
-    "cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY="
+  [
+    "https://mirrors.ustc.edu.cn/nix-channels/store"
   ];
   imports =
     [
-      ./pkgs.configuration.nix
       ./hardware-configuration.nix
     ];
 
   boot.loader.grub.enable = true;
-  boot.loader.grub.device = "/dev/sdb";
-
+  boot.loader.grub.device = "/dev/sda";
+  
   networking.hostName = "kami";
-
+  
   time.timeZone = "Asia/Shanghai";
-
   i18n.defaultLocale = "en_US.UTF-8";
-
-  systemd.tmpfiles.rules = [
-  "d /docker-compose 0755 root root -"
-  "d /docker-compose/docker-root 0755 root root -"
-  ];  
-  
-  virtualisation.docker.enable = true;
-
-  virtualisation.docker.daemon.settings = {
-  registry-mirrors = [
-    "https://docker.m.daocloud.io"
-    "https://docker.1panel.live"
-    "https://hub.rat.dev"
-    "https://registry.docker.jp"
-    "https://kr.registry.ktcloud.com"
-    "https://docker.sg.mirror"
-    "https://my.mirror.docker.io"
-    "https://dockerhub.mirror.tw"
-    "https://docker.1ms.run"
-  ];
-  
-  data-root = "/docker-compose/docker-root";
-  };  
-
+ 
   users.users.kami = {
-     isNormalUser = true;
-     extraGroups = [ "wheel" "docker"];
-     hashedPassword = "$6$K3dbe2DC/9mq7Y8h$0Uy/lNwnFTHAjC61imz1wWQvDo12BUtOsgbP4vRAgN9gR.RFV8ZHw/6ns16.QO1KoXNuPxxNSoYMDk1HSYq/O/";
-     };
-
- # environment.systemPackages = with pkgs; [
- #    vim
- #    curl
- #    openssh
- #    htop
- #    git
- #    neofetch
- #  ];
+    isNormalUser = true;
+    extraGroups = ["wheel"];
+    hashedPassword = "$y$j9T$RVjZnG9S0wuu0sDCgoo2l1$TOrljjjbcxbJR/WfContG6GV1uLFvHZLxxI.hnR1AZ2";
+  };
 
+  environment.systemPackages = with pkgs; 
+  [
+   nano
+   vim
+   curl
+   openssh
+   htop
+   git
+   neofetch
+  ];
+   
   services.openssh.enable = true;
   services.openssh.settings.PasswordAuthentication = true;
 
   networking.firewall.enable = false;
 
   system.copySystemConfiguration = true;
-
-  system.stateVersion = "25.05";
+   
+  system.stateVersion = "25.11";
 
 }
-
-
diff --git a/hardware-configuration.nix b/hardware-configuration.nix
index f053870..09321e4 100644
--- a/hardware-configuration.nix
+++ b/hardware-configuration.nix
@@ -4,28 +4,25 @@
 { config, lib, pkgs, modulesPath, ... }:
 
 {
-  imports =
-    [ (modulesPath + "/profiles/qemu-guest.nix")
-    ];
+  imports = [ ];
 
-  boot.initrd.availableKernelModules = [ "ata_piix" "floppy" "sd_mod" "sr_mod" ];
+  boot.initrd.availableKernelModules = [ "ata_piix" "ohci_pci" "ehci_pci" "ahci" "sd_mod" "sr_mod" ];
   boot.initrd.kernelModules = [ ];
   boot.kernelModules = [ ];
   boot.extraModulePackages = [ ];
 
   fileSystems."/" =
-    { device = "/dev/disk/by-uuid/e711aad0-33cb-4635-be8c-f06e49889419";
+    { device = "/dev/disk/by-uuid/73e7da32-81f4-43b2-b075-6687005ffdbb";
+      fsType = "ext4";
+    };
+
+  fileSystems."/boot" =
+    { device = "/dev/disk/by-uuid/a843cc6e-365c-4efe-aa60-059dd568d546";
       fsType = "ext4";
     };
 
   swapDevices = [ ];
 
-  # Enables DHCP on each ethernet and wireless interface. In case of scripted networking
-  # (the default) this is the recommended approach. When using systemd-networkd it's
-  # still possible to use this option, but it's recommended to use it in conjunction
-  # with explicit per-interface declarations with `networking.interfaces.<interface>.useDHCP`.
-  networking.useDHCP = lib.mkDefault true;
-  # networking.interfaces.ens3.useDHCP = lib.mkDefault true;
-
   nixpkgs.hostPlatform = lib.mkDefault "x86_64-linux";
+  virtualisation.virtualbox.guest.enable = true;
 }
diff --git a/pkgs.configuration.nix b/pkgs.configuration.nix
deleted file mode 100644
index e910e2d..0000000
--- a/pkgs.configuration.nix
+++ /dev/null
@@ -1,12 +0,0 @@
-{ config, pkgs, ... }:
-
-{
-environment.systemPackages = with pkgs; [
-     vim
-     curl
-     openssh
-     htop
-     git
-     neofetch
-];
-}