I love it. A couple notes: - This is about 10x a real defrag speed - WAAAY too fast - IIRC the "Data that will not be moved" was typically lumped at the beginning of the drive, not spread out all over.

I'm a stickler for accuracy too. The defragged blocks in the original Win9x program weren't solid blue - they had a hatch pattern texture to them. I remember it way too vividly.

Source: Watching a disk defrag was every millenial kids equivalent of going to the laundromat and watching laundry tumble.

https://youtu.be/dc_SDyLYq3U?t=347

I am guessing the developer took into account the fact that the younger generations these days don't have the patience for real time defragging.

author commenting on such things:

https://morello.dev/blog/defrag98-rebuild

what it looked like before

https://morello.dev/blog/windows-98-defrag-simulator

a previous discussion:

https://news.ycombinator.com/item?id=40962195

here is another version i found when googling these things that seems somewhat similar, but with a few more "accurate" features. also, has the source available in a single file.

https://horatioconkerhead.github.io/win98-defrag/

if you want the real deal, you can run windows 95 in the browser quick. it took running it a few times to get it to actually defrag:

https://archive.org/details/win95_in_dosbox

It could be spread out too