You should also pay particular attention to RAM. My ti-book that was running fine on Jag crashed and burned on Panther due to two "bad" 512mb ram sticks. I have found Panther a lovely OS but a very challenging and finicky install. Paul On Oct 31, 2003, at 5:14 PM, Steve Goldstein wrote: > Here's some advice, unrefined and maybe overkill until I can test > things out, but better cautions than sorry like me; before upgrading, > first: > > Disconnect all attached drives > > Turn off all startup applications and all haxies in the System > Preferences window. >