The install.ESD (Electronic Software Download) is a highly compressed and encrypted version of the install.WIM (Windows Imaging Format) file.

Microsoft makes the installation files for Windows 10 available from a variety of sources. If you download an ISO file from a site intended for IT pros or developers, you might be unable to create ...

The ESD files will be downloaded to the same folder where Brigadier.exe exists. This is how you can download Boot Camp drivers on Windows 10 without Boot Camp assistant.

It also works with the encrypted and compressed Electronic Software Download (.esd) file format introduced in Windows 8.1.