EMBER: a DOS-like OS Claude wrote from scratch that boots from USB on a real Lenovo Yoga, with Sound Blaster emulation

r/ClaudeAI (1,134 upvotes, 226 comments)·medium signalXBlueskyLinkedInCopy link

The top r/ClaudeAI post of the day (1,134 upvotes, 226 comments) documents a multi-day loop of describe goal, let Claude implement, compile, boot real hardware, photograph the failure, iterate. The result has its own boot process and graphical environment, keyboard, USB mouse, touchpad and touchscreen support, tablet mode, file manager, audio player, resource monitor, DOS program compatibility, and full Sound Blaster plus PC speaker emulation so unmodified DOS games produce audio. Doom, Alley Cat and Prince of Persia run; UEFI boot is in progress. The author is explicit that it was nowhere near one-shot, with scrambled graphics and hard crashes in the early builds.