7 Replies Latest reply: Jul 21, 2013 10:34 PM by mende1
Wallymoon Level 1 (0 points)

Can I upgrade my Powerbook G4's 10.4.11 operating system?

PowerBook, Mac OS X (10.4.11)
  • Niel Level 10 (298,277 points)

    Yes; buy a Mac OS X 10.5 DVD from a source such as Amazon or eBay. Additional steps are needed if its CPU is slower than 867MHz.



  • mende1 Level 10 (92,156 points)

    Welcome to Apple Support Communities


    Of course, always that your Mac is compatible with Leopard > http://support.apple.com/kb/sp517


    Leopard isn't available anymore at Apple, so you have to buy it at Amazon or eBay. Make sure you buy Leopard in the black and purple box, that means that is the retail box.


    Then, make a backup of your files, insert the DVD and follow the steps to upgrade. After upgrading, open  > Software Update, and install the most recent Mac OS X Leopard version.


    Mac OS X 10.5.8 is the latest version for PowerPC-based Macs, so you can't upgrade to Snow Leopard or later. If you want to use a newer OS X version, buy a new Mac

  • Kappy Level 10 (265,676 points)

    Depends. If it has an 867 MHz or faster processor then you can upgrade to 10.5.8. You will need to look for a Leopard retail installer set on eBay or Amazon. They are no longer sold by Apple. Be sure you only purchase a retail set of discs. Do not buy OEM gray labeled products or so-called "universal" installers.

  • Wallymoon Level 1 (0 points)

    Thanks for your helpful reply.  I did call Apple though and they said they will send me a disc to upgrade the operating system to 10.6.8 for $20 so I'm hoping that will solve my problem.  I hope the rep was right.

  • mende1 Level 10 (92,156 points)

    Mac OS X 10.6.8 isn't compatible with your Mac. I told you to buy Leopard, not Snow Leopard, because Snow Leopard is only compatible with Intel-based Macs and you have a PowerPC-based Mac

  • Wallymoon Level 1 (0 points)

    HMM, maybe I heard wrong, but I gave them the system specs and they said that the disc they're sending me would help.  Let's see...

  • mende1 Level 10 (92,156 points)

    If you really have a PowerBook G4 and Apple is sending you a 10.6.8 DVD, it won't work