hi im jose and i recently got a mac g4 and been ver fustrated tryin to upgrade since its running on osx 10.2.8 some one gave me a g3 running on 10.3.9 with a broken monitor so just to see what would happen i took the harddrive from the g3 and add it to my g4 and both harddrives appear to run good on my system except that my system sounds very alterated (the fan) what should i do or did i did wrong by installing it cuz 10.3.9 seems to run good on my system any advise will be very appreciated thank you