HELP - OS X 10.5 Clean Install - iMac G5

Discussion in 'PowerPC Macs' started by mikeyangelo58, Sep 23, 2011.

  1. mikeyangelo58 macrumors member

    Sep 9, 2011
    I want to perform a clean install on an iMac 1.9 GHz PPC G5...

    This iMac came with System Install Discs (OS X Tiger 10.4.2)

    It is currently running OS X Leopard 10.5.8 (PPC does not support Snow Leopard)...

    The iMac will not read my Leopard DVD (Burned Copy...NOT Original)

    Although, my MacBook (Intel) reads the DVD just fine...

    The iMac also will not boot from this DVD when I hold C or Option...


    Where can I go from here?

    The goal is to simply erase my iMac...

    I want to give it to my parents to so they can use it...

    Is there anyway to achieve a "like new" condition without this install disk?

    The only alternative method I can think of is...

    Perform a clean install with System Discs (Tiger 10.4.2)...

    But if I do this I wouldn't be able to upgrade it back to Leopard...

    Given that it currently will not read that burned DVD...

    And I won't pay for a used/new Leopard 10.5 install disc...

    WAY TOO MUCH MONEY...they sell for $200+

    Thanks for the help...

    Any thoughts or suggestions would be greatly appreciated...

  2. chrismacguy macrumors 68000

    Feb 13, 2009
    United Kingdom
    Assuming it *is* actually a backup of a disc that got scratched, or you know you have and its lost, or whatever (i.e. you do own 10.5, and this isn't "help me my pirated DVD doesn't work"- which is against forum rules), I believe there is a way to get an Intel Mac to perform a PowerPC compatible Leopard install (go and google as I can't remember the technique) - then all you have to do is put your iMac into FireWire Target Disk Mode, hook it up to the MacBook and install onto the iMacs HD using your MacBook.
  3. ashameer macrumors newbie

    Sep 24, 2009
    1) Start your Macbook in Target Mode (holding T, while booting)
    2) Connect Macbook to iMac
    3) Insert DVD in MacBook
    4) Install
  4. mikeyangelo58, Sep 23, 2011
    Last edited: Sep 23, 2011

    mikeyangelo58 thread starter macrumors member

    Sep 9, 2011

    I'm a total amateur at this but from what I read it sounds simple enough...

    I googled like you suggested and found this:

    Installing Leopard to an external firewire drive:

    Within that page was further details from how to clone the Tiger Installer which is useful too me because I don't know exactly how to do this sort of thing...

    From what I gather I should be able to manage this...

    But I am not well versed in using Disk Utility to re-partition the drive...

    I understand I want to repartition the iMac with a small partition of 10 GB that will hold the clone of the Leopard DVD...

    Performing a re-partition will apparently erase everything on my hard drive but I shouldn't care because I don't need to copy any as I want to perform a clean install...

    I understand I want a second partition of 30 GB to hold the Leopard System

    This second partition will later be selected to "erase-and-install" during the installer process and once the installation has finished the iMac will reboot from this second partition...

    This is where I get most confused because from what I read... :confused:

    It says something about preventing the computer from bogging down by immediately using Spotlight and Time Machine system preferences to set things up correctly?

    It then goes onto say to "put away" this drive properly by reverting to Tiger!?

    ...selecting the computer's internal drive as your startup drive...rebooting...etc.

    I was under the impression this entire process would perform a clean install on my iMac's internal drive...

    I don't understand why I am performing a clean install on a 30GB second partition rather than on the entire internal drive...

    I must be interpreting these final steps above wrong...

    ...Everything else seems to make sense including the following prior steps:

    - Insert Leopard DVD into MacBook
    - Create disk Image of "Mac OS X Install DVD" using Disk Utility
    - Change Image Format to DVD/CD Master and give convenient name
    - Save to image to Desktop. Wait until DVD is copied then eject DVD
    - Restore image file to partition on external firewire drive (iMac)

    As to the other reply...

    This method seems very over simplified...

    And when you say install...

    How would I install while maintaining this connection...?

    Don't I need to boot from the Installer DVD, requiring me to restart
  5. mikeyangelo58 thread starter macrumors member

    Sep 9, 2011
    Correct me if I am wrong...

    But I think I can disregard that second partition?

    ...and just boot from the first partition following the installer instructions to erase and install on my internal hard drive?
  6. mikeyangelo58 thread starter macrumors member

    Sep 9, 2011
    I just realized that my firewire cable is a 6 pin to 9 pin...

    This makes it unable to connect my old iMac to my MacBook

    However, I just set up my new iMac...

    So can this entire process still work using my new iMac to create the disk image...and mounting my old iMac via Firewire?

    Should be no difference...but I just wanted to double check...
  7. mikeyangelo58 thread starter macrumors member

    Sep 9, 2011
    All is well...

    I put iMac (mid-2011) into target disk mode...

    Then slipped in the OS X Leopard DVD, mounting it to my old iMac G5...

    From here I booted up the iMac G5 from the installer DVD...

    Performed a clean erase of the iMac G5 and installed OS X Leopard...

    Worked flawlessly...

    Thanks for the help

    Very much appreciated...

    Only issues remaining...

    iMac G5 still likes to put itself in sleep mode sporadically and the fan runs high

    ...power supple issue?

    Thanks again.

  8. karolis30 macrumors newbie

    Jan 19, 2012
    the world
    just get the OSX image file

    It's easy to install PPC versions of OS X without a CD/DVD drive if you have an OS X disk image, like .iso or .dmg:
    1. Make second partition on your hard drive (4.7 size) with Disk Utility, just be sure you have 10+GB of free space. You will NOT lose any data.
    2. Mount .iso (.dmg) by double clicking
    4. Open Disk Utility go to Restore, then drag the MAC OS X to 'destination' and your second partition to the 'Source'. enter passw
    5. Restart and hold alt (option) button and choose MAC OS X DVD from the menu.
    you can do the same with the another mac by connecting the destination mac in the 'target disk mode' with FireWire cable
  9. MisterKeeks macrumors 68000


    Nov 15, 2012
    The OP has already resolved his issue. Furthermore, this thread is over a year old, so please don't revive threads.

  10. Lil Chillbil macrumors 65816

    Lil Chillbil

    Jan 30, 2012
    Welcome to the forum

    please only post in recent threads not ones you randomly googled :D

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