512 Views 2 Replies Latest reply: Apr 26, 2012 3:38 PM by Limnos
The requirements for 10.5 Leopard are:
- A Mac computer with an Intel, PowerPC G5, or Power PC G4 (867 MHz or faster) processor
- 512 MB memory or more
- A DVD drive for installation
- 9 GB of available disk space or more
You do lose OS Classic by upgrading to 10.5, however, what do you mean that software is not compatible? Any Powerbook 867Ghz or later with 512MB of memory and some free disk space should be able to upgrade.