Skip navigation

Download OS9

1403 Views 3 Replies Latest reply: Feb 12, 2012 1:00 PM by Don Archibald RSS Branched to a new discussion.
ILatu Level 1 Level 1 (10 points)
Currently Being Moderated
Feb 12, 2012 12:07 PM

I bought an iMac G3 today from a used items store. I was wondering where I can find OS9 so I can reinstall it. On apple website I was able to find up to 7.

  • Don Archibald Level 10 Level 10 (101,125 points)
    Currently Being Moderated
    Feb 12, 2012 12:31 PM (in response to ILatu)

    OS 7.5.3 is the latest full-install OS download available from Apple. All later versions are updaters only, and require a specified pre-exisiting OS version to already be present. RE OS 9, this mans that all OS 9 downloads from Apple require some version of OS 9 to already be present.


    You will need to acquire an OS 9 Install CD in an adequate version for your model, install that, then apply updaters as needed.


    What specific model iMac G3 do you have? What is its processor speed? This article may be able to help -

    iMac: How To Differentiate Between Models (CRT)


    Also, if the serial number lable is still on the machine, the model info, including processor speed, is shown on that.


    The reason to determine the model - all Macs have a minimum OS which they can use. There's no sense in acquiring an install CD for a version too early for that model.

  • Don Archibald Level 10 Level 10 (101,125 points)
    Currently Being Moderated
    Feb 12, 2012 1:00 PM (in response to ILatu)

    That model is also referred to as the Summer (2000) model.


    It originally came with a model-specific version of OS 9.0.4. It can use that original OS 9.0.4 Software Install CD, but finding one of those will be difficult. It can also use a retail OS 9.1 Install CD or a retail OS 9.2.1 Install CD (all retail OS 9 Install CDs have a white label with a large gold 9 on them, and do not refer to any specific model on the label).


    Some users who installed the latest firmware update for models like that later reported that their original OS 9.0.x Software Install CD would no longer work. Since there is no easy way to tell whether the machine has had the firmware update, you shgould probably look for either a retail OS 9.1 or 9.2.1 Install CD.


    Places like Hardcore Mac sell such retail disks, but at a very steep price. Places like EBay are more affordable alternatives, but be sure you get exactly what you need.


    You can also try contacting an Apple User Group - most large cities and universities have one.

    Apple - User Groups


More Like This

  • Retrieving data ...

Bookmarked By (0)


  • This solved my question - 10 points
  • This helped me - 5 points
This site contains user submitted content, comments and opinions and is for informational purposes only. Apple disclaims any and all liability for the acts, omissions and conduct of any third parties in connection with or related to your use of the site. All postings and use of the content on this site are subject to the Apple Support Communities Terms of Use.