diff --git a/systems/pbp.nix b/systems/pbp.nix
index dd8be05..a849db1 100644
--- a/systems/pbp.nix
+++ b/systems/pbp.nix
@@ -12,11 +12,12 @@
 
   boot.loader = {
     efi = {
-    canTouchEfiVariables = true;
+    canTouchEfiVariables = false;
   };
 
   grub = {
     enable = true;
+    efiInstallAsRemovable = true;
     efiSupport = true;
     version = 2;
     device = "nodev";
@@ -61,14 +62,6 @@
     };
   };
 
-  fileSystems = {
-    "/" = {
-      device = "/dev/disk/by-label/NIXOS_SD";
-      fsType = "btrfs";
-      options = [ "noatime" ];
-    };
-  };
-
   networking = {
     hostName = "pbp";
     networkmanager.enable = true;