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I have ISO of registered Windows 8 Professional. It is an old one. So when I install Windows from scratch I have to update it. Updates are quite large (at least for me with slow internet connection). I want to avoid downloading updates every time I re-install Windows. So once I have updated the fresh install is there a way that I can create an installation media (ISO) from this updated fresh install?

One other thing! I am also thinking about upgrading this install to 8.1 and then to 10. So I am thinking about creating an ISO when it is updated to 8.1 and one ISO when it is updated to 10 too.

So, is it possible? And if yes then how?

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  • What you want is disk image software, there are many free ones, Macrium Reflect is pretty good and they have a free version. Be sure to make the bootable rescue media after installing the program.
    – Moab
    Aug 8, 2015 at 2:30
  • I have uaed disk imaging tools Ghost and DriveXML to be specific. But I was thinking about a proper installation ISO with proper installation setup just like an original Windows installation whick asks for Key, language, time and other settings like that.
    – Muhammad Tahir
    Aug 8, 2015 at 2:37

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Yes, it is possible to add updates to a custom ISO file: it is called "slipstreaming". There are a number of tools to help you do this, for instance WinReducer 8. There is a good guide to using this at LifeHacker.

You will need to start all over again with Windows 10 as this is a fresh install with a different ISO. I doubt that there are slipstreaming tools for Windows 10 just yet, but as Moab notes you may actually want to look at disk image solutions.

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  • Thanks for mentioning the exact term "slipstreaming"! I can do R&D myself now! Although the guide mentioned seems to be what I would go with! As I have found on Microsoft forums that it is not possible to create install media from an already installed windows. So I think only option is to add updates in existing ISO.
    – Muhammad Tahir
    Aug 8, 2015 at 10:12

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