Why after installing Ubuntu does not see a bootable USB flash drive with Windows?

Question

ubuntu

Good evening, such a problem.
Somehow I decided to install ubuntu on one computer, everything was fine until I decided to put Windows there again and then it started.
It sees the installation flash drive from ubuntu, but not from Windows.
With a flash drive, everything is in order, on another computer (where Windows) he sees it and installed it again for verification.
What is the problem?

Answer 1

Open gnome-disks and look for the flash drive there. Boot partitions may not be displayed for mounting in the file manager, but this does not mean that the system does not see them and / or cannot mount them.