Windows and Linux are like an operators in a warehouse. Windows knows some ways to store stuff and keep track of what is stores, Linux knows some ways too. Sometimes the way they store stuff overlaps, sometimes it doesn't. If you put Linux into a warehouse that Windows operated, by default, Linux will be able to find boxes and stuff, but the Windows operator has some small tricks up their sleeve to make it harder, and of course Windows has kept it a secret.

If you want to find all your boxes in a Windows warehouse and continue using the warehouse without being afraid of squishing a small box with a big one because the piece of paper Windows uses has some secret handwriting that was misinterpreted for "there's no box here", it's better to take out all the boxes, let Linux setup it's storage system, and then put the boxes back in.