Looks good, thanks. I'm on Windows but it should be pretty easy to port to batch or PowerShell. I've used 7z command line before for automation.

The script makes an 8GB file by default but it should be possible to change that. Add a parameter for the size of the card or even auto-detect it.

I've documented the process and written up my thoughts on IoT core here: https://unop.uk/dev/windows-10-iot-core-public-release-for-r...