Secure Boot is a feature of your computer's UEFI that only allows approved operating systems to boot up.

The Disks app takes over some more challenging commands, such as fsck, mount, parted, chown, and dd. This app is a handy GUI that also prevents you from having to edit the fstab configuration file ...

Most Linux distributions focus on productivity, development, gaming, or a combination of those. Some, however, choose a different path, which is what Neptune Linux has done.