This is a Heyawacky puzzle.
It’s been awhile, hasn’t it? Obviously this omits the wackiness of Heyawacky and is a typical nikoli Heyawake. Well, maybe typical is too strong of a word.
The main issue with this puzzle is that it is absurdly susceptible to meta-logic, so I’m just going to have to remind you that you’ll miss the full solving experience if you use any.
If you’re a real master of Heyawake, try solving this without marking the squares where black cells can’t go on your first run.