diff --git a/scripts/tripleboot-install.sh b/scripts/tripleboot-install.sh
index 7cfaade..bbc4e9e 100644
--- a/scripts/tripleboot-install.sh
+++ b/scripts/tripleboot-install.sh
@@ -4,7 +4,18 @@
 set -e
 
 # === CONFIGURATION ===
-DISK="/dev/nvme0n1"
+# Detecter automatiquement le disque principal (exclut USB/removable)
+DISK=""
+for d in /dev/nvme0n1 /dev/sda /dev/sdb /dev/vda; do
+  if [ -b "$d" ] && [ "$(cat /sys/block/$(basename $d)/removable 2>/dev/null)" = "0" ]; then
+    DISK="$d"
+    break
+  fi
+done
+# Si pas detecte, permettre de le passer en argument
+[ -n "$1" ] && DISK="$1"
+[ -z "$DISK" ] && { echo "Aucun disque detecte. Usage: $0 /dev/sdX"; exit 1; }
+
 USER="jules"
 PASSWORD="jules"  # A changer apres installation
 MIRROR="http://deb.debian.org/debian"