Build 6942 Recovery disk no longer supports Firewire

Version 6868 was able to recognize my external Firewire drive. Then I noticed on the website that build 6942 was out. Downloaded the .iso file burned to CD and gave it a try. Everything loads, but during recognition...my external Firewire drive light will turn red (activity). No red...when I was in the interface...only my HDD shows up...no firewire drive. Guess back to 6868