Windows Enterprise Desktop

Oct 24 2014   9:49AM GMT

New Win10 user? Build 9860 ISO for clean install

Ed Tittel Ed Tittel Profile: Ed Tittel

Tags:
ISO
Windows 10

Let’s say you’ve been meaning to install Windows 10 on a test machine, but you haven’t gotten around to that just yet. Because MS has already released another version of the Windows 10 Preview, this might mean you’d have to download and install the original build (9841), then do likewise for the latest version (Build 9860) to play catch-up. “Wouldn’t it be easier,” I can hear many readers grumble, “if MS just provided a new ISO file so that those just getting started with Windows 10 could just install 9860 in one fell swoop?” Alas, that’s not what MS provides, but there is a way to get there from what is available, thanks to Chris Holmes, an automotive electrician from NYC who dabbles pretty seriously with Windows stuff as an avocation (and thanks also to Sergey Tkachenko of WinAero.com for alerting me to this possibility by posting a nicely illustrated blog about an ESD Decrypter tool and how to put it to work).

Holmes has actually blogged on this topic himself in a post called “Make an ISO for Windows 10 9860,”  wherein he describes how to take the ESD file from the 9860 Win10 update and convert it into an ISO for direct installation. ESD stands for electronic software download, and for Windows updates, it refers to an encrypted and heavily compressed Windows Imaging Format, or .wim, file. This file is part of the download for the 9860 update: it’s named install.esd and it resides in C:\$Windows.~BT\Sources while the download and install process is underway.

Once you’ve downloaded and installed the ESD Decrypter tool, you can use it to create what the program calls a “traditional Windows ISO” from the install.esd file you’ve obtained and stashed in a directory of your choosing. You can either shell out of the download and install runtime environment on a Windows PC while the install gets underway and save a copy of install.esd, or you can grab the x64 or x86 versions of that file directly online (thanks to links from Tkachenko’s blog post on the subject). Either way, you’ll run the decrypt.cmd file from an administrative command prompt windows, and type the number 4 at the command prompt input line to build a traditional ISO image. From there, you can use Rufus to construct a bootable UFD installer for the latest Windows 10 build, and be off and running with the latest version without first having to install Build 9841 and immediately upgrade it to Build 9860. I like it, and you probably will, too! In fact, this is a nice addition to my overall Windows image management toolkit.

9  Comments on this Post

 
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  • edu5678
    Como rayos voy a hacer todo el proceso si ni la imagen puedo descargarlo desde la update, me marca error.
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  • Ed Tittel

    Thanks for your reply, edu5678: If you'd like to be more specific about what kind of error you encountered, I can do some research to see if there's a fix. This approach has worked for me on a test machine, however.

    --Ed--

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  • husnainrasheed
    I downloaded the media and decrypt and made ISO dvd. Now while installing, about the product key, I copy paste the same key provided by MS from the site, but error was "we couldn't verify the product key". What do I do now?
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  • 4anant
    Thanks it is work,

    but tell me how to offline update 9841 to 9860. we have both ISO and ESD files is there any way to do that.
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  • Ed Tittel
    You should be able to create a bootable UFD from the 9860 ISO file, then run that as an "upgrade install" from the 9841 runtime environment. I just did that yesterday and it worked like a charm. --Ed--
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  • zikamks
    I try to  run the decrypt.cmd file from an administrative command prompt windows, I have : ERROR: Specified file not found or damaged   What is problem? Yestrday it work with x86 esd, now I try with x64 esd format...
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  • Ed Tittel

    I haven't seen this problem on my x64 machines myself. I suggest you might want to try another source for the code from http://www.windoblog.com/windows-8-1-esd-in-to-dvd-iso/. You can read more about how to use the tool at http://www.windoblog.com/windows-8-1-esd-in-to-dvd-iso/, too. I don't know the tool well enough, nor can I replicate your problem, so I really can't be of much help in troubleshooting. Given the warning from Microsoft when the program starts up, I don't believe they'll be too inclined to offer tech support, either!

    Sorry for your trouble,

    --Ed--

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  • jessica88
    Highly recommend this website:  http://www.CHEAPKEYSTORE.com/Cheap and Genuine products, You guys could look around! I believe it will not let you down!

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  • jessica88
    Try this to get Windows 10 Product Key:
    http://www.CHEAPKEYSTORE.com/

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