I think I found the answer to my own question. It looks like there is an OS 9 and an OSX version of this update. Since that drive will have OS 9.2.2 installed, then I'm guessing I need the OS 9 version of the update. Can anyone confirm? In any case, I think I will wait to do this until I have a good backup most of the data on that drive. Lynn http://www.websolutionsbylynn.com/