InformationSince beginning of Windows Insider program we geeks have had a possibility to convert the ESD file of new upgrade build to an ISO image (tutorial). With it we could create DVD / USB install media to be used in clean, in-place and repair installs.
Since Windows 10 Insider Build 14986 Microsoft has started to use new Unified Update Platform (UUP), which no longer offers the install.esd file (read more in this post). Through some registry modifications users can at least for now disable UUP and get ESD version of the build upgrade, but it seems that this option might not be available in the future.
UUP is of course a positive change. It is differential, scanning user's existing Windows 10 installation only downloading and installing those system files that have changed. In ESD upgrade full Windows system (all system files and native applications) were replaced, with the same file or app version even in case the new build did not include a newer updated version. Regardless if a system file, component or application was updated, ESD upgrade replaced it. This caused download size to be bigger, in addition to longer time required for upgrade because full Windows was downloaded and everything overwritten with every upgrade.
However, the possibility to create an ISO image is, has been and will be important to many users. Microsoft has usually released an ISO when a build has been released to Insider Slow Ring, but we Fast Ring users do need an option to create our own install media.
This tutorial will show how to do that, how to create an ISO image out of a UUP upgraded Windows 10.
Thanks to fellow geek and TF member @SIW2 for finding a working decrypter
WarningNotice please: When Windows Update has finished downloading the UUP upgrade, the files needed to make the ISO are stored in subfolders of C:\Windows\SoftwareDistribution\Downloads.
These files will be removed when upgrade is done. If you want to make an ISO for future needs, you have to do it before starting the upgrade process itself, after downloading the upgrade files but before clicking Restart now button!
1.1) Download and open the compressed archive: UUPtoISO.zip
2.1) Browse to C:\Windows\SoftwareDistribution\Downloads folder. It contains several subfolders named with a hexadecimal string
2.2) In File Explorer, search for ext:esd. You will notice that all ESD files are stored in same subfolder, in this example case now in a folder starting with a526e:
2.3) This is the folder we need. Right click any of the ESD files, select Open file location:
2.4) Press CTRL + A to select all files in this folder, press CTRL + C to copy selected files to Clipboard (or right click and select copy):
2.5) Paste the content to UUPtoISO\UUPs folder:
2.6) Confirm if prompted:
3.2) Select 1 to create ISO, or 2 to get build and edition info:
3.3) Selecting Info you can check what build and edition, bit and language version ISO can / will be made from your UUP files:
That's it. You can now start upgrade or clean install Windows 10 using your ISO.
3.5) When preparations have been done, UUPtoISO starts creating the ISO:
3.6) ISO is ready:
3.7) Browse to UUPtoISO\UUPs folder, select all files you pasted there in step 2.5 and delete them, leaving the folder empty and ready for the next build upgrade
Awesome, ty Kari!