Choosing a hard disk during Mint 20 installation

[silfox2000]

Currently I have installed 19.3 on encrypted hard disk. Now I started the installation process of Mint 20 and the installer gave me 2 options - to erase the entire disk or something else. The "something else" led me to the well know partitioner, which do not give me an option to encrypt the hard disk, so I choose to erase the entire hard disk. The problem is that I have 2 hard disk and the installer do not ask me which one to erase. I can suppose that it should be sda, but there is no guarantee. Is it an installer bug or it will ask me after I press the "Install now" button? So far with my experience with Mint, after I press "Install now" it starts to partition and to install the OS.