Installing Windows 8 on an iMac(2012) using Parallels

phorner1250

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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?
 
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.
 
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.
 
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