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I have been trying to find the necessary command line switches for automating the upgrade for my Windows 8 clients to Windows 8.1. I have the ISO extracted and I've run setup.exe /? but that doesn't tell me enough.

I can't find any relevant information from search engines. Can anyone point me to some documentation or information on how to automate the upgrade so that it keeps user data, programs, etc? I know how to do it when running the installer manually, but I obviously do not wish to do that with 100+ machines.

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migrated from superuser.com Nov 6 '13 at 3:55

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Thank you for your response, but this is not the case with this. Original installation of operating system is done through applying a wim file to a new machine. This is an inplace upgrade that can only be accomplished by running the setup installer in a specific manner. Two different beasties, unfortunately. –  Ben M. Nov 5 '13 at 17:13
    

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According to this link you can run the command setup.exe /auto:upgrade to automatically upgrade to 8.1.

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This worked for me, thank you. –  Ben M. Nov 6 '13 at 20:13

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