Is the G3 iBook at least the 500MHz white model or newer? Then you're okay. Someone correct me if I'm wrong, but the colored older iBooks that look like toilet seats can't run Tiger because the requirements state that it must be for the G3's and newer that include a firewire port? Tom -------Original Message------- From: Ley Schleich Date: 01/27/06 01:46:36 To: A place to discuss Apple's iBook computers. Subject: [iBook] Tiger upgrade Q: We have in our house a G4 Power book, A G4 iMac, a G3 ibook and a Graphite iMac. Can Tiger 10.4.3 run on all four of these platforms? Karl