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Installing Windows 8 on an iMac(2012) using Parallels

  1. #1

    Installing Windows 8 on an iMac(2012) using Parallels


    I have been running XP and then Windows 7 on my iMac for some years but had to reboot when moving between windows and Mac.
    Now that I have the latest iMac I have installed XP, using Parallels and it works fine, with both systems running simultaneously on adjacent monitors. Brilliant!
    However, a Windows 8 upgrade, bought from Amazon, is proving difficult to activate. I thought that this may be because the XP is Sevice Pack 2 instead of SP3. Having difficulty getting SP3, I followed a video on Youtube which took me, via Regedit, to "CSD version" and changing 200 t0 300.
    XP now appears to be SP3 but is it really? I haven't downloaded anything, just changed a number.
    Is the Youtuber correct or is he taking the Mickey?
    Any advice please?

      My System SpecsSystem Spec

  2. #2


    Florida, USA
    Posts : 141
    Windows 8.1 Pro x64 with Media Center, Windows 10 Pro x64, Windows 7 x64 Ultimate SP1


    Quote Originally Posted by phorner1250 View Post
    I followed a video on Youtube which took me, via Regedit, to "CSD version" and changing 200 t0 300.
    XP now appears to be SP3 but is it really? I haven't downloaded anything, just changed a number.
    Is the Youtuber correct or is he taking the Mickey?
    Any advice please?

    No, just changing one number will not actually make it SP3.
      My System SpecsSystem Spec

  3. #3


    Thank you pbcopter for confirming my suspicions.

    I reversed the setting and finally installed SP3, but only by ignoring all the (recommended) choices all the way.

    Windows is now available on my iMac.
      My System SpecsSystem Spec

Installing Windows 8 on an iMac(2012) using Parallels
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