Tech Tangents already tried it, more or less. He did a whole video on it, but here’s the wiki entry. TL;DR: You really do need an actual microscope at minimum. You’re certainly not doing an entire disk in one shot. If you want to even attempt to reconstruct the entire thing you’re going to have to figure out how to solve the tracking challenges, and at that rate you may as well just use a drive.
This would make for a KILLER Hackaday read if you got a proof of concept working though hahaha.
Tech Tangents already tried it, more or less. He did a whole video on it, but here’s the wiki entry. TL;DR: You really do need an actual microscope at minimum. You’re certainly not doing an entire disk in one shot. If you want to even attempt to reconstruct the entire thing you’re going to have to figure out how to solve the tracking challenges, and at that rate you may as well just use a drive.