diff --git a/systems/x86_64-linux/bicboye/hardware-intel.nix b/systems/x86_64-linux/bicboye/hardware-intel.nix
deleted file mode 100644
index 35058b8..0000000
--- a/systems/x86_64-linux/bicboye/hardware-intel.nix
+++ /dev/null
@@ -1,122 +0,0 @@
-_: {
-  boot = {
-    initrd = {
-      availableKernelModules = [
-        "xhci_pci"
-        "ahci"
-        "ehci_pci"
-        "nvme"
-        "usbhid"
-        "usb_storage"
-        "sd_mod"
-      ];
-      luks.devices."cryptroot".device = "/dev/disk/by-uuid/e570c2be-65df-4208-9cac-a03de08a6209";
-    };
-    kernelModules = ["kvm-intel"];
-  };
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@"
-      ];
-      neededForBoot = true; # required
-    };
-
-    "/home" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@home"
-      ];
-    };
-
-    "/.snapshots" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@snapshots"
-      ];
-    };
-
-    "/var/log" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@log"
-      ];
-    };
-
-    "/etc/nixos" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@nixos-config"
-      ];
-    };
-
-    "/var/cache" = {
-      device = "/dev/disk/by-uuid/a1b57a56-16d4-45ea-bac3-daeacd3dbcb2";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@cache"
-      ];
-    };
-
-    "/boot" = {
-      device = "/dev/disk/by-uuid/B731-09A3";
-      fsType = "vfat";
-      options = ["fmask=0022" "dmask=0022"];
-    };
-
-    # "/storage/immich" = {
-    #   device = "/dev/disk/by-uuid/bae65b7a-4f08-4b0d-963c-72e71bfcff46";
-    #   fsType = "btrfs";
-    #   options = [
-    #     "defaults"
-    #     "compress-force=zstd"
-    #     "noatime"
-    #     "user"
-    #   ];
-    # };
-
-    # TODO: delete btrfs subvolume
-    # "/storage/syncthing" = {
-    #   device = "/dev/disk/by-uuid/e3a4c251-a3e2-4b5e-a63b-70f53b51836a";
-    #   fsType = "btrfs";
-    #   options = [
-    #     "defaults"
-    #     "compress-force=zstd"
-    #     "noatime"
-    #     "user"
-    #   ];
-    # };
-  };
-  swapDevices = [];
-}
diff --git a/systems/x86_64-linux/thonkpad/thonkpad-12.nix b/systems/x86_64-linux/thonkpad/thonkpad-12.nix
deleted file mode 100644
index 49ebb2f..0000000
--- a/systems/x86_64-linux/thonkpad/thonkpad-12.nix
+++ /dev/null
@@ -1,136 +0,0 @@
-_: {
-  boot = {
-    initrd = {
-      availableKernelModules = [
-        "xhci_pci"
-        "thunderbolt"
-        "nvme"
-        "usb_storage"
-        "sd_mod"
-      ];
-      luks.devices."cryptroot".device = "/dev/disk/by-uuid/9de352ea-128f-4d56-a720-36d81dfd9b92";
-    };
-    kernelModules = [
-      "kvm-intel"
-      # "thinkpad_acpi"
-      "iwlwifi"
-      "xe"
-    ];
-    kernelParams = [
-      "xe.force_probe=7d45"
-      # "resume_offset=2465529"
-      # "intel_pstate=active"
-      # "thinkpad_acpi.fan_control=1"
-    ];
-    # resumeDevice = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-  };
-
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "autodefrag"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@"
-      ];
-      neededForBoot = true;
-    };
-
-    "/home" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "autodefrag"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@home"
-      ];
-    };
-
-    "/.snapshots" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@snapshots"
-      ];
-    };
-
-    "/var/log" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "autodefrag"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@log"
-      ];
-    };
-
-    "/var/cache" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "autodefrag"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@cache"
-      ];
-    };
-
-    "/etc/nixos" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@nix-config"
-      ];
-    };
-
-    "/nix" = {
-      device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-      fsType = "btrfs";
-      options = [
-        "defaults"
-        "autodefrag"
-        "compress-force=zstd"
-        "noatime"
-        "ssd"
-        "subvol=@nix-store"
-      ];
-    };
-
-    # ref: https://sawyershepherd.org/post/hibernating-to-an-encrypted-swapfile-on-btrfs-with-nixos/
-    # "/swap" = {
-    #   device = "/dev/disk/by-uuid/870fde90-a91a-4554-8b1c-d5702c789f4d";
-    #   fsType = "btrfs";
-    #   options = [
-    #     "subvol=@swap"
-    #     "noatime"
-    #   ];
-    # };
-
-    "/boot" = {
-      device = "/dev/disk/by-uuid/B9A2-7AA6";
-      fsType = "vfat";
-      options = ["fmask=0022" "dmask=0022"];
-    };
-  };
-  swapDevices = [];
-}