7c11 to OS X 10.5
How do I upgrade my software OS X 10.4.11 to OS X 10.5
PowerBook, Mac OS X (10.4.11)
Assuming your PowerBook meets Leopard requirements:
- 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'll need to buy a retail OS X 10.5 disk. If you go to the used market, don't buy any gray-faced disks, as those are locked to the machine type they were delivered with, and 10.5 was never delivered with a PowerBook. You'll want the black-faced retail version, which Apple no longer sells. One source for unopened Apple software is http://www.hardcoremac.com
You probably know that by moving to 10.5 you'll lose the ability to run the OS X Classic environment, for earlier mac programs.