diff --git a/operating-systems/buer.scm b/operating-systems/buer.scm
index 44a08cd..753a498 100644
--- a/operating-systems/buer.scm
+++ b/operating-systems/buer.scm
@@ -75,6 +75,8 @@
                       #:prefix channel:)
   #|F|# #:use-module ((buer files)
                       #:prefix file:)
+  #|F|# #:use-module ((buer file-systems)
+                      #:prefix file-system:)
   #|P|# #:use-module ((buer privilege)
                       #:prefix privileged-programs:)
   #|R|# #:use-module ((buer rules)
@@ -124,15 +126,8 @@
                    %kicksecure-kernel-arguments)))
 
    (file-systems
-    (cons* (file-system
-            (device (file-system-label "guix-root"))
-            (mount-point "/")
-            (type "ext4"))
-           (file-system
-            (device (file-system-label "home"))
-            (mount-point "/home")
-            (type "ext4"))
-           %base-file-systems))
+     (append file-system:volumes
+             file-system:persistent-directories))
 
    (users
     (cons* user:radio
@@ -193,9 +188,9 @@
                            (iota 2 1)))))
 
           #|Home environment services|#
-          (service guix-home-service-type
-                   (if (file-exists? "/run/current-system/provenance") '()
-                     `(("radio" ,home-environment:radio))))
+          ;(service guix-home-service-type
+          ;         (if (file-exists? "/run/current-system/provenance") '()
+          ;           `(("radio" ,home-environment:radio))))
 
           #|Log services|#
           (service rottlog-service-type)
@@ -257,7 +252,7 @@
           (service ntp-service-type)
           (service wpa-supplicant-service-type
                    (wpa-supplicant-configuration
-                    (config-file "/etc/wpa-supplicant.conf")
+                    (config-file "/etc/ws/wpa-supplicant.conf")
                     (interface "wlp2s0")
                     (extra-options `("-B"))))
           (service dhcp-client-service-type
@@ -309,6 +304,11 @@
           (service special-files-service-type
                    `(("/bin/sh" ,(file-append bash "/bin/bash"))
                      ("/usr/bin/env" ,(file-append coreutils "/bin/env"))))
+          (simple-service 'persistent-files-service
+                          special-files-service-type
+                          (map (juxt identity
+                                     (partial string-append "/gnu/persist/"))
+                               file-system:persistent-files))
 
           #|Sysctl services|#
           (simple-service 'extra-sysctl-settings sysctl-service-type
@@ -316,9 +316,9 @@
                             ("vm.watermark_boost_factor" . "0")
                             ("vm.watermark_scale_factor" . "125")
                             ("vm.page-cluster" . "0")))
-          (simple-service 'security-syctl-settings sysctl-service-type
-                          (alist-delete "net.core.bpf_jit_harden"
-                                        %kicksecure-sysctl-rules))
+          ;(simple-service 'security-syctl-settings sysctl-service-type
+          ;                (alist-delete "net.core.bpf_jit_harden"
+          ;                              %kicksecure-sysctl-rules))
 
           #|Base services|#
           (service urandom-seed-service-type)
diff --git a/operating-systems/buer/file-systems.scm b/operating-systems/buer/file-systems.scm
index c5e202d..b287cf3 100644
--- a/operating-systems/buer/file-systems.scm
+++ b/operating-systems/buer/file-systems.scm
@@ -1,104 +1,146 @@
-;; based on https://codeberg.org/squishypinkelephant/guix-random-junk
-
-;; how to guix: / as tmpfs
-
-;; /var/guix is REQUIRED to perform rollbacks
-;; create the folders /gnu/persist/etc/ssh /gnu/persist/etc/wireguard and
-;; the file /gnu/persist/etc/machine-id for dbus
-
 (define-module (buer file-systems)
   #:use-module (gnu system file-systems)
 
-  #:export (rootfs
-            bootfs
-            file-systems))
+  #:export (partition:guix
+            persistent-directories
+            persistent-files
+            volumes))
 
 ;;; reminder: Send a patch to guix to make file-system-options and
 ;;; privileged-program-capabitilities receive a list-of-strings
 
-(define rootfs
-  (file-system
-       (device (file-system-label "root"))
-       (mount-point "/")
-       (type "tmpfs")
-       (options "mode=755")))
+(define partition:guix
+  (file-system-label "guix"))
 
-(define bootfs
-  (file-system
-    (device (file-system-label "root")
-     (type "btrfs")
-     (mount-point "/boot")
-     (dependencies (list rootfs))
-     (flags '(no-atime))
-     (options (format #f "compress=zstd:7,~
-                          discard=async,~
-                          ssd,~
-                          subvol=@boot")))))
+(define volumes
+  (list #|base|#
+        %immutable-store
+        %pseudo-terminal-file-system
+        %shared-memory-file-system
 
-(define file-systems
-  (cons* rootfs
-         ;; /gnu/store
+        #|boot|#
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/boot")
+          (check? #f)
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "subvol=@boot,~
+                               discard=async,~
+                               ssd")))
+
+        #|run|#
+        (file-system
+          (device "none")
+          (type "tmpfs")
+          (mount-point "/run")
+          (check? #f)
+          (needed-for-boot? #t)
+          (options "mode=0755"))
+
+        #|tmp|#
+        (file-system
+          (device "none")
+          (type "tmpfs")
+          (mount-point "/tmp")
+          (check? #f)
+          (needed-for-boot? #f))
+
+        #|root|#
+        (file-system
+          (device "none")
+          (type "tmpfs")
+          (mount-point "/")
+          (check? #f)
+          (needed-for-boot? #t)
+          (options "mode=0755"))
+
+        #|gnu|#
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/gnu/persist")
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "subvol=@gnu/persist,~
+                               ssd")))
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/gnu/store")
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "compress=zstd,~
+                               subvol=@gnu/store,~
+                               ssd")))
+
+        #|var|#
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/var/guix")
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "compress=zstd,~
+                               subvol=@var/guix,~
+                               ssd")))
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/var/lib")
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "compress=zstd,~
+                               subvol=@var/lib,~
+                               ssd")))
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/var/log")
+          (check? #f)
+          (needed-for-boot? #t)
+          (flags '(no-atime))
+          (options (format #f "compress=zstd,~
+                               subvol=@var/log,~
+                               ssd")))
+        (file-system
+          (device "none")
+          (type "tmpfs")
+          (mount-point "/var/run")
+          (check? #f)
+          (needed-for-boot? #t)
+          (options "mode=0755"))
+
+        #|home|#
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/root")
+          (flags '(no-atime))
+          (options (format #f "subvol=@root,~
+                               discard=async,~
+                               ssd")))
+        (file-system
+          (device partition:guix)
+          (type "btrfs")
+          (mount-point "/home")
+          (flags '(no-atime))
+          (options (format #f "subvol=@home,~
+                               discard=async,~
+                               ssd")))))
+
+(define persistent-directories
+  (map (lambda (filename)
          (file-system
-           (device (file-system-label "root"))
-           (type "btrfs")
-           (mount-point "/gnu/store")
-           (needed-for-boot? #t)
-           (dependencies (list rootfs))
-           (flags '(read-only bind-mount no-atime))
-           (options (format #f "compress=zstd:7,~
-                                discard=async,~
-                                ssd,~
-                                subvol=@gnu/store")))
-         ;; /gnu/persist
-         (file-system
-           (device (file-system-label "root"))
-           (type "btrfs")
-           (mount-point "/gnu/persist")
-           (needed-for-boot? #t)
-           (dependencies (list rootfs))
-           (flags '(no-atime bind-mount))
-           (options (format #f "discard=async,~
-                                ssd,~
-                                subvol=@gnu/persist")))
-         ;; /home
-         (file-system
-           (device (file-system-label "root"))
-           (type "btrfs")
-           (mount-point "/home")
-           (dependencies (list rootfs))
-           (flags '(no-atime bind-mount))
-           (options (format #f "compress=zstd:7,~
-                                discard=async,~
-                                ssd,~
-                                subvol=@home")))
-         ;; /var/guix
-         (file-system
-           (device (file-system-label "root"))
-           (type "btrfs")
-           (mount-point "/var/guix")
-           (dependencies (list rootfs))
-           (flags '(no-atime))
-           (options (format #f "compress=zstd:7,~
-                                discard=async,~
-                                ssd,~
-                                subvol=@var/guix")))
-         ;; /var/log
-         (file-system
-           (device (file-system-label "root"))
-           (type "btrfs")
-           (mount-point "/var/log")
-           (dependencies (list rootfs))
-           (flags '(no-atime))
-           (options (format #f "compress=zstd:7,~
-                                discard=async,~
-                                ssd,~
-                                subvol=@var/log")))
-         ;; /boot
-         bootfs
-         (file-system
-          (device (file-system-label "esp"))
-          (type "vfat")
-          (dependencies (list bootfs))
-          (mount-point "/boot/efi")
-          (create-mount-point? #t))
-         %base-file-systems))
+           (mount-point filename)
+           (device (string-append "/gnu/persist" mount-point))
+           (type "none")
+           (flags '(no-atime bind-mount))))
+       `("/etc/guix"
+         "/etc/ssh"
+         "/etc/wireguard")))
+
+(define persistent-files
+  (list "/etc/machine-id"
+        "/etc/wpa-supplicant.conf"))
diff --git a/operating-systems/buer/install b/operating-systems/buer/install
new file mode 100644
index 0000000..2441f2c
--- /dev/null
+++ b/operating-systems/buer/install
@@ -0,0 +1,42 @@
+set -exu
+
+# Mounting
+mount -L guix /mnt
+
+cd /mnt
+for dir in boot root home var/log var/guix gnu/persist gnu/store; do
+    mkdir -p $dir; btrfs subvolume create @$dir; mount --bind @$dir $dir
+done
+
+cd @gnu/persist
+mkdir -p /etc/guix /etc/ssh /etc/wireguard
+cd
+
+# Connection
+rfkill unblock wifi
+wpa_supplicant -B -i wlp2s0 -c <(wpa_passphrase 'AP24' 'Floresta123@')
+dhclient
+
+# Initialization
+guix shell git -- git clone codeberg.org/anemofilia/radix
+guix shell git -- git clone codeberg.org/anemofilia/zero
+
+export GUILE_LOAD_PATH="zero:zero/operating-systems:radix:$GUILE_LOAD_PATH"
+guix system init zero/operating-systems/buer.scm /mnt
+
+# Cleaning
+cd /mnt
+for dir in boot root home var/log var/guix gnu/persist gnu/store; do
+    umount $dir; rm -rf $dir
+done
+
+# Populate
+guix shell dbus -- dbus-uuidgen > @gnu/persist/etc/machine-id
+cp -r /etc/ssh/* @gnu/persist/etc/ssh
+cp -r /etc/guix/* @gnu/persist/etc/guix
+
+# Permissions
+chmod 700 @root
+cd @gnu/persist/etc/
+chmod 644 machine-id
+chmod 600 guix ssh wireguard