This is a random project I made in C#. To use this, you'll need to split a Windows 10 1809 x64 ISO into 700MB .swm files.
Use the following command to do this: dism /Split-Image /ImageFile:install.wim /SWMFile:install.swm /FileSize:700 (change ImageFile and SWMFile path if needed)
You'll need to place the individual .swm files into an individual ISO file using a program like AnyBurn (https://anyburn.com/). Make sure to rename the 1st install.swm to install1.swm (sorry for this, but..)
Run the setup program from Windows PE or a regular install of Windows and follow the instructions.