diff --git a/build.sh b/build.sh
index 2df2552..0fffd3d 100755
--- a/build.sh
+++ b/build.sh
@@ -5,13 +5,20 @@ cd "$(dirname "$(realpath "$0")")"
 alias log='echo [build.sh]'
 
 
+VBOX_VERSION=$(VBoxManage --version | cut -d 'r' -f 1)
 ETH_DEV=$(route | grep '^default' | grep -o '[^ ]*$')
 VM_NAME="epitls_build"
 
 
-log "creating iso"
-    sudo rm -fr tmp/*
+log "updating environment"
+    sudo rm -fr tmp
     mkdir -p tmp output
+    if ! [ -f output/guest_add.iso ]
+    then wget -O output/guest_add.iso "https://download.virtualbox.org/virtualbox/$VBOX_VERSION/VBoxGuestAdditions_$VBOX_VERSION.iso"
+    fi
+
+
+log "creating iso"
     sudo mkarchiso -v -w $PWD/tmp/wdir -r -o $PWD/output $PWD/profile
     rm -f                     output/install.iso
     mv output/archlinux-*.iso output/install.iso
@@ -32,16 +39,18 @@ log "creating VM"
     VBoxManage storageattach   $VM_NAME --storagectl=SATA --port=0 --device=0 --type=hdd      --medium=$PWD/tmp/drive.vdi
     VBoxManage storagectl      $VM_NAME       --name=IDE  --add ide
     VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=0 --device=0 --type=dvddrive --medium=$PWD/output/install.iso
+    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=1 --device=1 --type=dvddrive --medium=$PWD/output/guest_add.iso
 
 
 log "running VM with iso"
     virtualboxvm --startvm $VM_NAME --dvd $PWD/output/install.iso
-    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=0 --device=0 --medium=none
+    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=0 --device=0 --medium=none # removes iso after run
+    VBoxManage storageattach   $VM_NAME --storagectl=IDE  --port=1 --device=1 --medium=none # removes iso after run
 
 
 log "exporting VM"
     rm -f                               $PWD/output/epitls.ova
-    VBoxManage export $VM_NAME --output=$PWD/output/epitls.ova --vsys=0 --vmname=epitls --description="VM pour le développement à EPITA Toulouse"
+    VBoxManage export $VM_NAME --output=$PWD/output/epitls.ova --vsys=0 --vmname=epitls --description="VM pour le développement à EPITA Toulouse."
 
 
 log "disposing VM"
diff --git a/profile/airootfs/root/post_install.sh b/profile/airootfs/root/post_install.sh
index 050183f..e97fa99 100644
--- a/profile/airootfs/root/post_install.sh
+++ b/profile/airootfs/root/post_install.sh
@@ -27,6 +27,15 @@ log "configuring network"
     " | arch-chroot -u user "$ROOT"
 
 
+log "installing virtualbox guest additions"
+    mkdir            "$ROOT/mnt/cdrom"
+    mount "/dev/sr1" "$ROOT/mnt/cdrom"
+    echo "
+        cd /mnt/cdrom
+        echo yes | sudo ./VBoxLinuxAdditions.run
+    " | arch-chroot -u user "$ROOT"
+
+
 log "installing paru"
     echo "
         cd /tmp
diff --git a/profile/airootfs/root/user_configuration.json b/profile/airootfs/root/user_configuration.json
index 437df7c..ac53d1b 100644
--- a/profile/airootfs/root/user_configuration.json
+++ b/profile/airootfs/root/user_configuration.json
@@ -90,35 +90,20 @@
         "custom_mirrors": [],
         "mirror_regions": {
             "France": [
-                "https://mirrors.jtremesay.org/archlinux/$repo/os/$arch",
-                "https://mirrors.gandi.net/archlinux/$repo/os/$arch",
-                "https://mirrors.eric.ovh/arch/$repo/os/$arch",
-                "https://mirrors.celianvdb.fr/archlinux/$repo/os/$arch",
-                "https://mirror.wormhole.eu/archlinux/$repo/os/$arch",
-                "https://mirror.theo546.fr/archlinux/$repo/os/$arch",
-                "https://mirror.thekinrar.fr/archlinux/$repo/os/$arch",
-                "https://mirror.sysa.tech/archlinux/$repo/os/$arch",
-                "https://mirror.oldsql.cc/archlinux/$repo/os/$arch",
-                "https://mirror.its-tps.fr/archlinux/$repo/os/$arch",
-                "https://mirror.ibakerserver.pt/Arch/$repo/os/$arch",
-                "https://mirror.cyberbits.eu/archlinux/$repo/os/$arch",
-                "https://archlinux.mirrors.ovh.net/archlinux/$repo/os/$arch",
-                "https://archlinux.mailtunnel.eu/$repo/os/$arch",
-                "https://arch.yourlabs.org/$repo/os/$arch",
-                "http://mirrors.gandi.net/archlinux/$repo/os/$arch",
-                "http://mirrors.celianvdb.fr/archlinux/$repo/os/$arch",
-                "http://mirror.theo546.fr/archlinux/$repo/os/$arch",
-                "http://mirror.oldsql.cc/archlinux/$repo/os/$arch",
-                "http://mirror.lastmikoi.net/archlinux/$repo/os/$arch",
-                "http://mirror.its-tps.fr/archlinux/$repo/os/$arch",
-                "http://mirror.cyberbits.eu/archlinux/$repo/os/$arch",
                 "http://mirror.archlinux.ikoula.com/archlinux/$repo/os/$arch",
-                "http://mir.archlinux.fr/$repo/os/$arch",
-                "http://ftp.u-strasbg.fr/linux/distributions/archlinux/$repo/os/$arch",
+                "http://arch.yourlabs.org/$repo/os/$arch",
+                "http://mirror.its-tps.fr/archlinux/$repo/os/$arch",
+                "http://mirroir.wptheme.fr/archlinux/$repo/os/$arch",
+                "http://archlinux.cu.be/$repo/os/$arch",
+                "http://mirrors.gandi.net/archlinux/$repo/os/$arch",
+                "http://mirror.cyberbits.eu/archlinux/$repo/os/$arch",
+                "https://archlinux.mailtunnel.eu/$repo/os/$arch",
+                "http://mirror.united-gameserver.de/archlinux/$repo/os/$arch",
+                "https://mirrors.gandi.net/archlinux/$repo/os/$arch",
+                "http://archlinux.rezopole.net/$repo/os/$arch",
                 "http://archlinux.mirrors.ovh.net/archlinux/$repo/os/$arch",
-                "http://archlinux.mailtunnel.eu/$repo/os/$arch",
-                "http://archlinux.datagr.am/$repo/os/$arch",
-                "http://arch.yourlabs.org/$repo/os/$arch"
+                "https://mirror.cyberbits.eu/archlinux/$repo/os/$arch",
+                "http://mirror.netweaver.uk/archlinux/$repo/os/$arch"
             ]
         }
     },
@@ -128,6 +113,7 @@
     "offline": false,
     "packages": [
         "git",
+        "linux-headers",
         "virtualbox-guest-utils",
         "lightdm-slick-greeter",
         "cinnamon",