diff --git a/install.sh b/install.sh
index dc7dec0..74244f2 100644
--- a/install.sh
+++ b/install.sh
@@ -48,6 +48,28 @@ else
     echo "apt-transport-https is already installed."
 fi
 
+# 1. Deaktivér linjer med 'deb cdrom:' i /etc/apt/sources.list
+sudo sed -i '/^deb cdrom:/s/^/#/' /etc/apt/sources.list
+
+# 2. Kontroller og tilføj Bookworm repositories, hvis de ikke allerede er der
+if ! grep -q "^deb http://deb.debian.org/debian/ bookworm main non-free-firmware" /etc/apt/sources.list; then
+    echo "Tilføjer Debian Bookworm repositories til /etc/apt/sources.list"
+    sudo tee -a /etc/apt/sources.list <<EOL
+
+deb http://deb.debian.org/debian/ bookworm main non-free-firmware
+deb-src http://deb.debian.org/debian/ bookworm main non-free-firmware
+
+deb http://security.debian.org/debian-security bookworm-security main non-free-firmware
+deb-src http://security.debian.org/debian-security bookworm-security main non-free-firmware
+
+deb http://deb.debian.org/debian/ bookworm-updates main non-free-firmware
+deb-src http://deb.debian.org/debian/ bookworm-updates main non-free-firmware
+
+EOL
+else
+    echo "Debian Bookworm repositories er allerede tilføjet."
+fi
+
 # APT Add "contrib non-free" to the sources list
 if [ -f /etc/apt/sources.list.d/debian.sources ]; then
     if ! grep -q "Components:.* contrib non-free non-free-firmware" /etc/apt/sources.list.d/debian.sources; then