diff --git a/hosts/fruitbook/.configuration.nix.swp b/hosts/fruitbook/.configuration.nix.swp
new file mode 100644
index 0000000..a53592b
Binary files /dev/null and b/hosts/fruitbook/.configuration.nix.swp differ
diff --git a/hosts/fruitbook/.disks.nix.swp b/hosts/fruitbook/.disks.nix.swp
new file mode 100644
index 0000000..67097f7
Binary files /dev/null and b/hosts/fruitbook/.disks.nix.swp differ
diff --git a/hosts/fruitbook/filesystems.nix b/hosts/fruitbook/filesystems.nix
index f5ab04f..e62635b 100644
--- a/hosts/fruitbook/filesystems.nix
+++ b/hosts/fruitbook/filesystems.nix
@@ -18,3 +18,18 @@ in {
     };
   };
 }
+{ pkgs, ... }:
+
+let
+  device = "/dev/disk/by-id/ata-APPLE_SSD_SM0512G_S29ANYAH526520";
+  subvol = name: {
+    type = "btrfs";
+    inherit device;
+    options = ["subvol=${name}"];
+  };
+in {
+  fileSystems."/" = subvol "rootfs";
+  fileSystems."/nix" = subvol "nix";
+  fileSystems."/persist" = subvol "persist";
+  fileSystems."/persist/home" = subvol "persist/home";
+}