@lanodan I first bumped into it when it was called LoseThos (I was writing a roundup of niche OSs on 711chan) so I recall reading about him using Windows and stuff. I mostly missed Terry's "constant streaming" era, I briefly bumped into him when he was yelling at people on HN.

The LoseThos CD image was pretty small, about 5MB. Looks like it makes several attempts to boot before actually booting; I didn't give it persistent storage so I wonder if Terry shoved some canaries into memory to detect problems booting. The timestamp on this file and the rest of the files in that directory indicate that this was the current pre-TempleOS as of August 10, 2010. (I thought I'd lost all this stuff but I bumped into it while writing this post.)
LTCD.ISO
losethos.png