How to: Create a bootable ISO file from your Windows 10 Download for reinstallation
Please note, if you plan to use this same ISO image to install or upgrade another computer, it must be running the same edition or at least have a product key that can activate it.
After downloading Windows 10 through Windows Update, a copy of the installation file called a Install.esd (Electronic Software Delivery) is created in the folder C:\$Windows.~BT\Sources\
Press Windows key + R
Copy the Install.esd file from the folder to your Downloads or Documents folder.
If you don't see it, enable Show hidden files and folders.
Download the latest version of ESD Decrypter
(use 7zip to extract the compressed file)
Extract esd-decrypter-wimlib-4.7z to a folder.
You will need a free software called 7zip to do this:
After you have extracted the files, put the appropriate .ESD file you downloaded into that same folder.
Right click decrypt file in the same folder and click Run as administrator
Select option 2
When complete, burn to a blank DVD or create a bootable copy on a USB thumbdrive.
Preparing the .ISO file for installation.
See instructions for burning .ISO files in Windows 7 or later:
You can also use the Microsoft USB/DVD Tool, which is recommended for Windows XP users.
After obtaining the .iso file you use the Microsoft .iso to USB/DVD tool to create a bootable DVD or USB (requires a blank DVD or USB flash stick of at least 4 GB).
For UEFI based systems
If your computer is UEFI based, these are normally systems that come pre-loaded with Windows 8 or later, you will need to prepare the ISO file for such a configuration or you will receive an error message during setup. The thumbdrive needs to be formatted as FAT32 and use the GPT partitioning scheme. To do this, you need to use Rufus, a small tool you can download for free.
Rufus - credit: Pete Batard/Akeo
After you have installed Rufus:
- Launch it
- Select ISO Image
- Point to the Windows 10 ISO file
- Check off Create a bootable disk using
- Select GPT partitioning for EUFI firmware as the Partition scheme
- Choose FAT32 NOT NTFS as the File system
- Make sure your USB thumbdrive in the Device list box
- Click Start
- Close when complete
Otherwise, you download the official ISOs from Microsoft or use the one that will be provided as part of your upgrade.
- How to Upgrade to Windows 10 Anniversary Update version 1607 using Windows Update
- How to Upgrade to Windows 10 Anniversary Update version 1607 using ISO File
How to install the latest Windows 10 build from within Windows 8.1 or Windows 7