3 Replies Latest reply: Jun 27, 2012 10:52 AM by rccharles
Brandon Fairbanks Level 1 Level 1

I have an iMac G3 and when i put a mac os x 10.4 disc in it it spits it back out, whats causes this is there a way to fix it? Thanks.

iMac, Mac OS X (10.2.x)
  • rccharles Level 6 Level 6
    Classic Mac OS

    Is this a tray loading or slot loading computer?


    You mean when you insert the dvd the dvd is immediatly rejected & comes out?


    Mac OS 10.4 Tiger shipped on a DVD.  Most iMac G3's had a cd reader.  A few multi-media machines ahd a dvd reader.


    There are a few cd version of Tiger.




    You may want to post machine info.

    blue apple > about this mac > more info button. Click on the hardware line. It has a little triangle in front of the work hardware.


    Leave out the serial number.



    Machine Name: iMac

    Machine Model: PowerMac4,1

    CPU Type: PowerPC 750 (33.11)

    Number Of CPUs: 1

    CPU Speed: 600 MHz

    L2 Cache (per CPU): 256 KB

    Memory: 768 MB

    Bus Speed: 100 MHz

    Boot ROM Version: 4.1.9f1


    Look around system profiler.  It will tell you whether or not you have a dvd or cd reader.




    I recommend getting an external firewire dvd reader.  Firewire is required.


    Do you have another firewire mac.  You may be able to install via target disk mode.



  • Brandon Fairbanks Level 1 Level 1

    It is a slot load iMac it has Mac OS X 10.2. yes it takes it for about two seconds then spits it out, i do, i have a blackbook and a mac mini.


    Machine name: iMac

    Machine Model:iMac (version=32.1)

    CPU Type: PowerPC g3

    Number of CPUs: 1

    CPU Speed: 350MHz

    L2 Cache: 512k

    Memory: 256 MB

    Bus Speed:100 MHz

    Boot ROM Version:3.0f3


    Thanks Robert.

  • rccharles Level 6 Level 6
    Classic Mac OS

    Are you trying to boot from a DVD?  Most likely, you machine has a cd reader & is rejecting the 10.4 dvd.


    Is the cd/dvd all black?  If so, this is good. Full install versions were in black.


    How many cd/dvd's do you have?  1 it is a dvd.  4 they are cds.


    If dvd it will have dvd written on the DVD.


    the iMac g3 350MHz doesn't have a firewire connection. You are going to have to pull out the harddrive & place in some other g3 / g4 / g5 machine ( firewire external is ok. )


    You have downlevel firmware, but your machine is working.


    The easiest thing might be to get a g3 400mhz board. That way you could use an external firewire harddrive.


    here is some more info that I have collected.


    You need to figure out the level of your  firmware before installing 10.2 or greater. ( The PC name for firmware is BIOS. ) Installing 10.2 with a down level firmware will most likely make your iMac unusable and difficult to fix.


    What is Open Firmware?

    The firmware on a PPC is called Open Firmware. Open Firmware software receives control when you poweron your machine.  It does some hardware testing and some hardware configuration then passes control to your version of Mac OS.   It reside on a PROM ( program read only memory ) chip on the logic board.


    Figuring out what level of Open Firmware you have?

    1) Mac OS 9.x or 8.x, you need to use the Apple System Profiler.

    Apple -> Apple System Profiler


    2) Mac OS X, use the System Profiler.

    Apple -> About This Mac

    click on the More Info... tab

    click on Hardware

    read the Boot ROM Version


    3) Open Firmware, boot into Open Firmware.

    Power on your iMac while holding down command+option+o+f

    The first output line contains the firmware level. Mine reads:

    Apple PowerMac4,1 4.1.9f1 BootRom built on 09/14/01 at 13.18.04

    Copyright 1994-2001 Apple Computer Inc.


    On my machine, I have 4.1.9f1.


    What firmware do you need?



    For a slot loading iMac, this article indicates that you need to be running 9.1 or later version of Mac OS Classic.


    "The iMac Firmware Update 4.1.9 will only run on iMac computers with slot-loading CD or DVD drives running Mac OS 9.1 or later from a local drive. If you are using Mac OS X you must boot from a local Mac OS 9.1 or later writeable partition (not a CD, or network disk) prior to following the update instructions."


    You can download the Mac OS 9 updates from the Apple site.



    For tiger, you need 256meg of memory.  A slot loader will take 1gig of memory.


    You may need to get more memory.

    get the 512meg card(s)




    Mac OS X 10.4: System requirements



    Pick the appropriate combo update.




    There is no need to partition. You can save hard drive space by doing a custom install. Leave out the print drivers you do not need and the languages you do not need. By customizing, you can trim Tiger down to about three gig.




    outoforderorder explains how...

    By the way, here it is how you find the terminal application.

    Macintosh-HD -> Applications -> Utilities -> Terminal


    From: san francisco,ca

    Registered: Apr 27, 2007


    Re: Do the widgets drain system resources and power?

    Posted: Apr 28, 2007 2:51 PM


    I tend to think dashboard is neat, but not neccesary for my everyday workflow.


    it is possible to enable and disable it as needed,

    by entering the following commands into the terminal:


    -- To turn Dashboard off:

    defaults write com.apple.dashboard mcx-disabled -boolean YES


    -- To turn Dashboard on:

    defaults write com.apple.dashboard mcx-disabled -boolean NO


    -- You have to restart the Dock after making either change for it to take effect:

    killall Dock


    Bye Bye Dashbaord



    Disable Spotlight, Bonjour and Dashboard: