Ah. the new G4s do not boot from OS9. You have to buy the ones you mention if you want os9. Classic works on all. mark ----- Original Message ----- From: "Goldberg, Franck (x2187)" <FGOLDBERG at PBWT.COM> To: "Power Macintosh G4 List" <G4 at lists.themacintoshguy.com> Sent: Thursday, April 10, 2003 9:41 AM Subject: Re: [G4] What's the difference between a G4 system 9 bootable and a regula r G4 X? > I'm referring to the G4 systems who are being sold with 'System 9 bootable' > mention. I thought you could always boot from system 9, by using the start > up disk preference/control panel. What is the difference?