Hello Willy, I've never installed OS9 ahead of OSX, so I'm not sure if your problem is due to the order in which you are installing "Classic" OS9. Try reformatting and running your Tiger installer again. Then install OS9. Good Luck, Dale _____________ On Feb 15, 2009, at 2:54 PM, Bill Coan wrote: > > Hi all, > > I am a recent novice Mac user having baught a G4 "Sawtooth" only > several months ago. ....... > I was told OS 9 would need to be installed before I could install > Tiger so I did that successfully. Now, when I try > to install iger I get a pop-up message indicating that there is an > application needed to initiate the install that isn't being found but > no reference to what that application is. > > Does anyone have any Idea what's going on here or has had this > problem before who can give me some info on how to complete > this upgrade? > Thanks...Fatwilly