I did it with my PB and G4. Better do a Repair Disk Permissions first in Disk Utility. Paul Moortgat On 28-jul-04, at 03:01, Kevin Willis wrote: > I am thinking about upgrading my G4/400 from Jaguar to Panther. I was > wondering if it is possible to buy the Panther installation disks and > use them to upgrade without having to do a new install. I really > don't want to go through the process of backing up my system, > installing Panther, and then trying to put everything in it like I had > it in Jag. > > > Thanks-- > > Kevin