Skip navigation

Is it possible to upgrade an IMAC 10.4.11

371 Views 9 Replies Latest reply: Aug 13, 2013 7:34 PM by Perezi RSS
Perezi Calculating status...
Currently Being Moderated
Aug 12, 2013 1:26 PM

I recently purchased an IMAC from a local high school upgrading their computers.  It running on 10.4.11 and I cant find any antivirus's software that is compatable. Is it possible to just simply purchase the upgrade, or does anyone know a free antivirus that will support the older versions.  Thanks.

iMac, Mac OS X (10.4.11)
  • Kappy Level 10 Level 10 (221,050 points)
    Currently Being Moderated
    Aug 12, 2013 1:29 PM (in response to Perezi)

    You really shouldn't need any AV software, but if you feel you must then use ClamXav.

  • Kappy Level 10 Level 10 (221,050 points)
    Currently Being Moderated
    Aug 12, 2013 1:42 PM (in response to Perezi)

    Yes, depending on what your plans are for it. It's one of the very earliest Intel iMac models, so it has limited upgradability.


    You can upgrade RAM from the 1 GB installed to 2 GBs. This requires replacing the two installed modules with two 1 GB modules:


    Maximum Memory2.0 GB
    Memory Slots2 - 200-pin PC2-5300 (667MHz) DDR2 SO-DIMM


    I recommend OWC or DataMem as memory sources.


    You can upgrade the OS as far as Lion, but I would recommend going just to Snow Leopard. It will be better with that older hardware, plus you will be able to run older PPC-only software:


    Upgrading to Snow Leopard


    You can purchase Snow Leopard through the Apple Store: Mac OS X 10.6 Snow Leopard - Apple Store (U.S.). The price is $19.99 plus tax. You will be sent physical media by mail after placing your order.


    After you install Snow Leopard you will have to download and install the Mac OS X 10.6.8 Update Combo v1.1 to update Snow Leopard to 10.6.8 and give you access to the App Store. Access to the App Store enables you to download Mountain Lion if your computer meets the requirements.


         Snow Leopard General Requirements


           1. Mac computer with an Intel processor

           2. 1GB of memory

           3. 5GB of available disk space

           4. DVD drive for installation

           5. Some features require a compatible Internet service provider;

               fees may apply.

           6. Some features require Apple’s iCloud services; fees and


               terms apply.

  • Kappy Level 10 Level 10 (221,050 points)
    Currently Being Moderated
    Aug 12, 2013 2:10 PM (in response to Perezi)

    At the present time there are no viruses affecting OS X. There have been some trojans skipping about, but if you upgrade to Snow Leopard 10.6.8 and the security updates and Java updates, you will be protected by the Apple software. Most trojan protection is in between the ears. Avoiding the temptation to click on links you know nothing about or replying to spam email. Also, see:


    Helpful Links Regarding Malware Protection


    An excellent link to read is Tom Reed's Mac Malware Guide.

    Also, visit The XLab FAQs and read Detecting and avoiding malware and spyware.

    See these Apple articles:


              Mac OS X Snow Leopard and malware detection

              OS X Lion- Protect your Mac from malware

              OS X Mountain Lion- Protect your Mac from malware

              About file quarantine in OS X


    If you require anti-virus protection I recommend using ClamXav.

  • MadMacs0 Level 4 Level 4 (3,330 points)
    Currently Being Moderated
    Aug 12, 2013 3:02 PM (in response to Perezi)

    > also why is AV not necessary for iMac?


    One additional comment here. If you elect not to upgrade to at least OS X 10.6.8, you should consider running at least a light weight A-V app and turning Java off in all browsers. Keep your software fully up-to-date using Software Update.

  • MadMacs0 Level 4 Level 4 (3,330 points)
    Currently Being Moderated
    Aug 13, 2013 3:00 PM (in response to Perezi)

    Perezi wrote:


    is there an online source that would help my do the upgrade know like a video or a step by step instruction guide?



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.