This kind of shit used to be explicitly tested against. Get a Windows 7 install, fill up all but the last few bytes on the main HDD, it'll work fine, you'll be able to login and delete stuff.

Completely saturate memory, RAM full, swap full, the OS will still work. It'll be slow and messy, but you'll be able to navigate around enough to get shit ton.

Heck I suspect these scenarios would work even on Windows 10.

What kind of laughable tests doesn't even bother with the most obvious edge cases of "disk full"?

That isn't an uncommon scenario, quite the opposite, it is a very common scenario.

They moved all the resources in to shoveling copilot garbage in to everything.