TL;DR of the /home partition is this: One partition is gonna be the bootloader, typically a small /boot folder. This thing starts the booting process from efi, boot the kernel, this will mount the root partition (/). then, according to the File System TABle, typically a text file in /etc/fstab, you can mount whatever drives (and more!) Anywhere in the file system tree. A common setup is to partition your drive into a smallish / partition and a bigger /home partition. Under /home will be your /home/username folder, roughly the equivalent of C:\Users\username on windows, but even more of your install lives there now: any userspace application (usually a flatpak, which works crossdistro), ideally all user configuration, as well as of course your files. So, once you either need or want to switch distro, you leave the home partition untouched, format / and make a new user with the same username and home folder and bam, most if not all of your configuration and at least some of your apps will be there from the start You should probably do this, it’s not too complicated and it may save the ou a headache in the future.