It sounds like you did an install of 10.4 on the external HD while it was attached to a G4 unit of some kind. So is your question whether a G3 iBook will run ok from an OSX install originally done on a non-iBook, or from an OSX install done on a G4 anything iBook or not, or both these questions? > On Saturday, March 11, 2006, at 09:45 PM, Larry Blodgett wrote: > > I am trying to update a iBook G3 to 10.4. This is one of those G3 > > iBooks that has a failed firewire port. I do have two USB 1 ports and > > of course an ethernet connection. The optical is CD only. So I can't > > simply pop in the 10.4 DVD. Here is the procedure I have followed. > > > > Made a clone of the entire harddisk using SilverKeeper to a USB > > external harddrive. (took forever but worked fine) > > > > Connected the external harddrive to my G4 using Firewrire and updated > > the external drive. > > > > After I did this everything looks fine and the upgrade looks fine on > > the G4. (boots and looks fine) > > > > Now I need to copy the external partition back to the internal drive > > of the G3 iBook. . . .