maximum software update on a powerbook g4

Tiger or Leopard depending on what model you have. You can buy replacement chargers from Apple.

There are a lot of aluminum models. Leopard can run on any model PB starting with a

So, open Apple System Profiler in the Utilities folder and see what is displayed as your Model Identifier. If you have 3,5 or later then you can run Leopard provided it meets all the other system requirements for Leopard.

Leopard System requirements

You must have a Macintosh computer with:

1. an Intel processor or a PowerPC G4 (867 MHz or faster) or G5 processor
2. a DVD drive >built-in FireWire
3. at least 512 MB of RAM (additional RAM is recommended for development purposes)
4. a built-in display or a display connected to an Apple-supplied video card supported by your computer
5. at least 9 GB of disk space available, or 12 GB of disk space if you install the developer tools

Apple discontinued selling PowerBook batteries and power supplies over a year ago. You need to find one elsewhere or go third party:

http://eshop.macsales.com/item/NewerTech/APLPBI65W/

I bought one of these for a friend and it works perfectly.

On the subject of Leopard, does anyone know of somewhere where a copy for a PowerBook G4 can be purchased?

I've tried eBay and the sellers who have them don't seem reliable.

- Richard

Try Amazon.

Mac OS X 10.5 Leopard installation system requirements

http://support.apple.com/kb/TA24950

Look on eBay or Google the installer part numbers to possibly find at an on-line store. Here's what to look for:

MB427Z/A Leopard 10.5.1 install DVD

MB576Z/A Leopard 10.5.4 install DVD

MB021Z/A Leopard 10.5.6 install DVD (single user)

MB022Z/A Leopard 10.5.6 install DVD (5-user family pack)

Installing Mac OS X 10.5 Leopard

http://support.apple.com/kb/HT1544

Mac OS X 10.5 Leopard Installation and Setup Guide

http://manuals.info.apple.com/en/leopard_install-setup.pdf

After you install the base 10.5, download & install the 10.5.8 combo update at http://support.apple.com/downloads/Mac_OS_X_10_5_8_Combo_Update

The DVD should look like this

Caution - Leopard does not support classic mode. So, if you currently open OS 9 apps in classic mode, you won't be able to do this if you upgrade to Leopard.

 Cheers, Tom 😉

Thanks. That's going to be a huge help.