Ask HN: How to check if Ubuntu distro is installed correctly?

I was installin Ubuntu 22.04 in dual boot with Windows 10 (detailed information here [1]) and it installed successfully, but I'm worried that the Ubuntu installer didn't provide an option to choose the partition to install (in "Install Ubuntu alongside Windows" and "Erase Ubuntu and reinstall" mode) and didn't provide an option to choose disk encryption (at Ubuntu 20.04 it was probably ~LLVM).

Installed Ubuntu seems working normally in dual boot. But during installation there were 2 brief ~error messages on the black screen. Should I reinstall it from another USB stick ?

[1] https://ubuntu-mate.community/t/is-the-new-ubuntu-mate-install-ok-issues-during-install-though-finally-seems-ok/26454/2