Someone got Claude to write a DOS-like OS that boots from USB on a real Lenovo Yoga.

EMBER has its own boot process and graphical environment, keyboard, USB mouse, touchpad and touchscreen support, a file manager, an audio player, and full Sound Blaster plus PC speaker emulation so unmodified DOS games produce sound. Doom, Alley Cat and Prince of Persia run. The loop was describe goal, let Claude implement, compile, boot real hardware, photograph the failure, iterate, over multiple days. The author is explicit that it was nowhere near one-shot, with scrambled graphics and hard crashes early. Photographing a failed boot and feeding it back is the technique.