As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER T/O APPROX 2 MIN AFTER PACKS 1 AND 3 WERE TURNED ON, SMOKE WAS NOTICED THROUGHOUT THE A/C. ALL LAV SMOKE DET SOUNDED. PACKS AND BLEEDS WERE SHUT OFF, SMOKE DID NOT GET WORSE. A/C LANDED AT BOS 5 MIN AFTER SMOKE WAS NOTED. PUT APU ON MCO AND PERFORMED DUCT BURNOUT PER M/M RAN ENG AT PWR, OPS CK GOOD.