What does the message "invalid memory access" mean?
I was given this powerbook G4 model A1138, which doesn't start up beyond the apple screen. When I tried to use the apple hardware test disk, I received the message, "invalid memory access at srr0:0002c2d4 srr1:00003030". Then there is info on the machine, Apple PowerBook5,8 4.9.6f0 boot rom build on 10/05/05. Welcome to open Firmware, system time and date is 01/01/1904 00:01:20. There is then the choice to type "mac-boot" or "shut down". Typing "mac-boot" will get me back to the apple screen again and no farther, "shut down" works just fine. Also the little timer under the apple will stop after a few minutes and the optical drive will too and then the screen appears frozen/stuck.
I have tried to use a (new) OS X 10.4 install disk and only get the same results. However when holding down the option key at start up, I get a blue screen with an icon of the hard drive and the install disk and both icons have a small x on them, what does that mean? When using the hardware test disk, only the hard drive icon has the x.
Where do I start looking for the problem for this mac? Hard drive?
Solved my problem with a new hard drive and the retail os x 10.4 install dvd by using target mode and my iBook to remote install. After the install, software update ran and updated my os to 10.4.11 and suddenly all problems have gone away and machine is working. Thanks to all who helped. I never did get an answer to my question, what does "invalid memory access" mean? Now that the machine is working I guess it doesn't matter, still just curious.