text: These preceded the Intel Switch away from the PowerPC Architecture (G3, G4, G5) that happened around 2007. Therefore, these machines are over ten years old, Few modern Apple OS
  PPC: iMacs, PowerBooks (Laptops) and iBooks with the G5 CPU, things are less certain with the older G4 & G3.
  Better to Load some appropriate version of Linux onto these machines. Many excellent free packages replace what you were used to, but the machine will no longer be Apple Compatible:
  But you will have Libre Office, a free replacement for Pages or Microsoft Office, Etc., also ThunderBird Email & Firefox and possibly Chrome if you have the last of the G5s, so called 64Bit PPC
  Networking is ‘transparent’ (your machine will be a part of any network you are on) and is relaible and secure.
  – In addition PLEASE save one critical deeply buried file listed in the top paragraph of this linked page.:
  This is used as a driver for your iSight Camera to be used later and though small it is NOT permitted by Copyright & other laws that it be given away anywhere on the Internet!
  – You may be able to Boot from a Firewire Device if the CD/DVD is Faulty. an External Firewire DVD/CD player will do.
  This is “Lubuntu 16.04 Long Term Support ( LTS)” that is based on Ubuntu, that I found to work well, derived from the popular Debian distribution You can burn this on any reasonable machine,
  If you have a Choice, turn on Data Verification that may take twice as long to read back and check the job done.
  – If there is a CD or DVD Stuck in the slot drive, avoid trying to pulling it out or mechanical messing. Power the MAC down
  Then HOLD the Main (or Left) Mouse Button as you power up, this is supposed to send an Eject signal to the Drive. Listen to the motor running when you do so– It MAY take up to 30 seconds.
  “Take a large paperclip and grasp it with one hand so that about three quarters of an inch, or 18 millimeters, extends beyond your fingers. Insert the paperclip into the CD/DVD slot about 1.5 inches, or 36 millimeters, from the left edge of the slot.”
  -Power-up, even until the original MAC desktop comes up. Pay attention to any Error Messages about hardware!
  as it begins to Power-Up, be sure you are holding the letter “C” key on your Keyboard. This is supposed to force the MAC to start from that Disk.
  -BE PATIENT– Usually nothing happens for several minutes and the screen may be black. Wait. Listen. You may hear the characteristic squeaking noises of the Disk being read.