Powerbook 3400C Upgrade Tags: Configuration Powerbook Mac Os Mac OS X Last response: January 10, 2011 1:50 PM in Mac Os X Share karlstone December 30, 2010 11:46:21 PM Is it possible to upgrade a powerbook 3400c from Mac OS 8.X To Mac OS 9? More about : powerbook 3400c upgrade wildwell January 8, 2011 3:32:23 AM Wow... I clicked here kind of expecting to see a typo. To answer your question: Yes, but only to 9.0 or 9.1, I think. OS 9.2 had various incompatibility issues on several machines from that generation. I remember seeing those laptops thinking they were pretty bad-ass at the time. What do you plan to run on it that needs OS9? m 0 l xxl-london2011 January 10, 2011 1:50:53 PM OS 9.2 work on the 3400C, I did it, but don't try OS X! m 0 l Can't find your answer ? Ask ! Publish Related resources Powerbook 3400c Won't Start Up Forum Memory Upgrade for Mac PowerBook G4 12" 1GHz Forum More resources Read discussions in other Mac Os X categories Configuration Customization Drivers Security !