I'm a Linux newbie and I was in the process of understanding the filesystem and mountpoints after installing Arch Linux. I could not understand why, after the installation process, the home and root partitions which were mounted in /mnt/home and /mnt (during the installation as of the Arch wiki) now appears respectively in / (root) and /home, shouldn't they remain in /mnt? Just like any other partition mounted afterwards in /mnt?
I understand that the root directory has to be the topmost but why the we have to mount in into in /mnt and not / directly?