Ok I have researched for hours and have tried a few cfg examples and they didn't work for me. Here is what I want to do. I bought a new HP computer and it came with Win 8 Pro. I made media to boot from a USB device via UEFI. I want to add a ei.cfg to the sources folder so it asks me which version I want to install as in Core or Pro. I do many clean installs and want the option to choose. I am using an OEM or is it a VL version as it installs on store bought(HP,Dell,Ect). What would I want in my ei.cfg file? Also do I need to make windows show extensions other wise it saves as ei.cfg.txt. Can someone type up what I want in my ei.cfg file for my above mentioned scenario. Thanks.