How to create an ISO file of a new build of Windows 10 Technical Preview (or how to convert ESD to ISO)
New Windows 10 build is only available as an upgrade that you can download and install through the Updater built into the operating system. Thus, you cannot download the ISO of build 9860.
On the one hand, this will allow Microsoft to better test the new update mechanism, and on the other hand, this could be the problem for anyone after the upgrade, faced with a slowing down of the operating system or even a system crash.
Today we offer you a guide that will help you to setup an ISO image of the downloaded updates. The same guide can be used for the next Assembly, which will be released later.
Step 1: Assume that you have already downloaded and installed the new Assembly. Then go to C: RecoveryImage. There you will find the file «install.esd».
Step 2: Download the ESD Decrypter tool at this link.
Step 3: Extract the contents of the downloaded archive into a folder (example: C: ESDTool) and copy «install.esd» in the same folder.
Step 4: Run the. CMD file «decrypt» as administrator and select option 4 (by pressing the corresponding number on the keyboard) that will start the process of creating an ISO file that you can then burn to optical media or create a bootable USB flash drive for a clean installation.
Step 5: Wait until the process is completed (15-30 minutes, depending on the power of your computer).
The current build of Windows 10 is in any case not the final version and Microsoft will slowly add more features until the final release which is expected in the second half of 2015.