Is my PowerBook G4 compatible with Mac OS X Leopard?
I would like to upgrade my PowerBook G4 10.2.8 with the leapard. Is this possible?
Leopard can be installed on G4 Titaniums, but only ones that have at least 512MB of RAM, and a minimum processor speed of 867MHZ. There is software that can trick the OS into installing onto a computer that does not meet the processor speed requirement, but believe me, with a 400 or 500MHZ G4, Leopard would be PAINFULLY slow.
Install 10.4.11 Tiger instead. Compared to Leopard, it's a very lean and quick OS, and it is still supported by a lot of software out there.
As rdklinc suggess you should not install Leopard on a 400/500Mhz machine. The machine performance will be sluggish but if you want to try just take off the hard drive from the Ti, put in in a 2.5" firewire enclosure and use a Leopard PPC compatible machine to install the system (using a retail disk) or via a cloning software like SuperDuper. Then reinstall the HD in the Titanium. Another method I think would be to connect your Ti to another Mac in firewire target disk mode and install/clone Leopard to your internal Ti HD.
IMHO Tiger would be more suitable for your PowerBook model.
According to Mactracker, the maximum OS you can install is 10.4.11 (Tiger), but as rdlk's new post indicates, if you have a fast enough processor you can meet the requirements, refer to his post for that (however I agree with him that it's probably not worth it, it'd be too slow and sluggish for use).
if you have the 400 mhz model use 10.3.9 panther
if you have the 500 mhz model or up use tiger
if you have at least the 667 mhz model (32 mb of vram or higher) you can run leopard fine
but prefably use atleast the 867 mhz mdoel or 1 ghz model for leopard
leopard ran like a champ on my dads old 867 mhz quickslver
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