The configurator wrote en_US.UTF-8 unconditionally, so a Chinese install booted into an English system. sys_lang now follows the installer language, and both zh_CN and en_US locales are always generated in the target. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01QKxGW1raAWaqeU8WdHsMsp