iidanL/InstallWindowsWithoutUSB — reverse-engineered prompt

Build me a simple Windows tool, probably just a batch script with a friendly step by step flow, that lets me install any Windows ISO without using a USB stick or DVD.

The idea is that I already made a new partition in Disk Management, and this script should guide me through the rest. It should ask me for the ISO file and the drive letter of the new partition, make sure it is running as admin, unpack or copy what is needed from the ISO, and set up the machine so the new Windows installs in dual boot mode instead of overwriting my current one. I want it to feel safe and straightforward for a normal person, with clear prompts, warnings before anything important, and simple success or error messages.

Please keep it lightweight and local, using the included tools if that makes sense. Add comments in the script so it is easy to understand and maintain. If anything is unclear, look up the current Windows boot setup docs online.