As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
TAXING TO RUNWAY, BAGG SMOKE WARNING LIGHT ILLUMINATED ON THE EICAS. THE BAGG COMPARTMENT EXT. BUTTON WAS PUSHED. WE RETURNED TO THE GATE AND EVACUATED THE PASSENGERS. ALL THE APPR. CHECKLISTS AND PROCEDURES WERE COMPLETED. THE FIRE AND RESUE DEPARTMENTS WERE NOTIFIED AND RESPONDED. NO FIRE OR SMOKE WAS FOUND.