diff --git a/cfg/setup-user.sh b/cfg/setup-user.sh
index b80c936..59e0c36 100755
--- a/cfg/setup-user.sh
+++ b/cfg/setup-user.sh
@@ -75,11 +75,7 @@ if [[ -o login ]] && [[ -o interactive ]]; then
     if [[ -z "$INSIDE_WORKSPACE" ]]; then
         # Running as ai user on aios OS - enter workspace container
         export INSIDE_WORKSPACE=1
-        # Setup bind mount for shared user directory
-        sudo mkdir -p /var/lib/machines/workspace/root 2>/dev/null || true
-        sudo mount --bind /home/ai /var/lib/machines/workspace/root 2>/dev/null || true
-        # Enter workspace via chroot (avoiding nested systemd-nspawn audit issues)
-        exec sudo chroot /var/lib/machines/workspace /bin/zsh
+        exec sudo systemd-nspawn -q -D /var/lib/machines/workspace /bin/zsh
     else
         # Running as root inside workspace container - start claude
         if command -v claude &>/dev/null; then