diff --git a/config.scm-dualboot b/config.scm-dualboot
new file mode 100644
index 0000000..692f13a
--- /dev/null
+++ b/config.scm-dualboot
@@ -0,0 +1,139 @@
+;; Ceci est une configuration de système d'exploitation générée par
+;; l'installateur graphique.
+;;
+;; Une fois l'installation terminée, vous pouvez apprendre à modifier
+;; ce fichier pour ajuster la configuration du système et le passer à
+;; la commande « guix system reconfigure » pour rendre vos changements
+;; effectifs.
+
+
+;; Indique quels modules importer pour accéder aux variables
+;; utilisées dans cette configuration.
+(use-modules (gnu))
+(use-modules (srfi srfi-1))
+(use-modules (gnu system setuid) (gnu packages cups))
+(use-modules (nongnu packages linux) (nongnu system linux-initrd))
+(use-service-modules cups desktop networking ssh xorg virtualization vpn security-token)
+
+(operating-system
+  (locale "en_US.utf8")
+  (timezone "Europe/Paris")
+  (keyboard-layout (keyboard-layout "fr" "oss"))
+  (host-name "HCX")
+  
+    (kernel linux)
+
+  (initrd microcode-initrd)
+  (firmware (list linux-firmware))
+
+  ;; La liste des comptes utilisateurs (« root » est implicite).
+  (users (cons* (user-account
+                  (name "Lcx")
+                  (comment "Lcx")
+                  (group "users")
+                  (home-directory "/home/Lcx")
+                  (supplementary-groups '("users" "wheel" "netdev" "audio" "video" "libvirt" "kvm" "scanner" "spice" "cdrom" "lpadmin")))
+                %base-user-accounts))
+
+    ;; Quelques paquets installés au niveau du système.
+  ;; On installe notamment network-manager et son extension pour openvpn, 
+  ;; ou encore libvirt/virt-manager pour la virtualisation
+  (packages (append (list (specification->package "nss-certs")  
+                          (specification->package "qemu")  
+                          (specification->package "virt-manager")  
+                          (specification->package "libvirt")  
+                          (specification->package "lvm2")  
+                          (specification->package "mdadm")  
+                          (specification->package "network-manager")  
+                          (specification->package "network-manager-openvpn")  
+                          (specification->package "atheros-firmware")  
+                          (specification->package "xrandr")  
+                          (specification->package "udisks")  
+                          (specification->package "gvfs")  
+                          (specification->package "ntfs-3g")  
+                          (specification->package "testdisk")  
+                          (specification->package "openssh")  
+                          (specification->package "bind:utils")  
+                          (specification->package "gnome-tweaks")  
+                          (specification->package "os-prober")  
+                          (specification->package "thin-provisioning-tools"))
+                    %base-packages))
+
+  ;; Voici la liste des services du système.  Pour trouver les services disponibles,
+  ;; lancez « guix system search MOT-CLÉ » dans un terminal.
+    (services
+    (modify-services (append (list
+      (service gnome-desktop-service-type)
+      
+      ;; Service de gestion des clés de chiffrement physique
+      (service pcscd-service-type)
+
+        (service cups-service-type
+          (cups-configuration
+            (web-interface? #t)
+            (extensions
+              (list cups-filters brlaser epson-inkjet-printer-escpr hplip-minimal))))
+              
+      ;; Service KVM/Libvirt pour virt-manager
+      (service libvirt-service-type)
+      (service virtlog-service-type)
+
+      ;; Modification des limites mémoires pour les accès audio temps réel
+      ;; (utile notamment pour Ardour)
+      (pam-limits-service
+        (list
+          (pam-limits-entry "@audio" 'both 'rtprio 99)
+          (pam-limits-entry "@audio" 'both 'memlock 'unlimited)))
+
+      ;; Configuration de l'environnement graphique (notamment clavier)
+      (set-xorg-configuration
+        (xorg-configuration (keyboard-layout keyboard-layout))))
+        %desktop-services)
+
+    ;; Configuration du service network-manager pour prendre en charge
+    ;; OpenVPN
+    (network-manager-service-type config => (network-manager-configuration 
+      (inherit config)
+      (vpn-plugins
+        (list (specification->package "network-manager-openvpn")))))
+
+    (guix-service-type config => (guix-configuration
+      (inherit config)
+      (extra-options '("--cores=10"))
+      (substitute-urls
+                (append (list "https://substitutes.nonguix.org")
+                  %default-substitute-urls))
+      (authorized-keys
+        (append 
+          (list 
+            (plain-file "non-guix.pub" 
+              (string-append 
+                "(public-key"
+                " (ecc "
+                "  (curve Ed25519)"
+                "  (q #C1FD53E5D4CE971933EC50C9F307AE2171A2D3B52C804642A7A35F84F3A4EA98#)))")))
+            %default-authorized-guix-keys))))))
+
+  (bootloader (bootloader-configuration
+                (bootloader grub-efi-bootloader)
+                (targets (list "/boot/efi"))
+                (keyboard-layout keyboard-layout)))
+  (mapped-devices (list (mapped-device
+                          (source (uuid
+                                   "c2b84995-ab04-401c-a82b-41038b91548b"))
+                          (target "cryptroot")
+                          (type luks-device-mapping))))
+
+  ;; The list of file systems that get "mounted".  The unique
+  ;; file system identifiers there ("UUIDs") can be obtained
+  ;; by running 'blkid' in a terminal.
+  (file-systems (cons* (file-system
+                         (mount-point "/boot/efi")
+                         (device (uuid "1154-7620"
+                                       'fat32))
+                         (type "vfat"))
+                       (file-system
+                         (mount-point "/")
+                         (device "/dev/mapper/cryptroot")
+                         (type "ext4")
+                         (dependencies mapped-devices)) %base-file-systems)))