>> heindebruijne on 9/30/06 said >>> TiBook 400 mHz Now I got 10.4.8 coming with a new iMac 20"; I >>> tried to upgrade from >>> 10.3.9 to 10.4.8 but.. > 30 sep 2006 kl. 23.56 skrev John McGibney > The iMac DVD will only install to the iMac. --------- As John states the iMac DVD is för the iMac. Maybe it is possible to pick file in parts and update your Tibook, but I would _not_ advice even to _try_ that, for less than a very advanced power users. :-) You will have to invest in a proper OS 10.4 DVD and then download via Internet the Comboupdate which takes you from the 10.4.x on the DVD to the present 10.4.8. If your Tibook has CD-burner instead of DVD drive you will have to order a CD-set for 10.4 from Apple or you could possibly connect you Tibook i T-mode to the iMac and run the install via iMacs DVD drive, but note it should be a proper 10.4 install DVD not iMacs special version. Lisbeth in Gothenburg <http://homepage.mac.com/holisticum/> updat 050215 <http://www.got-a-mac.org> medlemssida för Got-a-Mac (Mug in Gothenburg)