Deja Dup not backing up entire system

Thanks in advance for your assistance...

I installed Deja Dup and tried to do a complete back by selecting any folders I have installed to or edited files (config files etc) and discovered that I could not add specific folders like /etc because Deja Dup said it didn't have authorization to those folders.

I read in the forum that I should set Deja Dup to backup the root folder /. So I did that and it did backup more than just /home but it only backed up /home /usr /var and nothing else (watching the details of the backup) and is also evident by the backup folder only being 19GB but my system drive is 63GB of data.

I edited plenty of config files in /etc that I don't want to have to do again if I restore a new install - so what do I do in Deja Dup so it will backup ALL data on my system drive..?

Thanks for the assistance. As noted Deja Dup doesn't do full backup of your system drive... So that was answered.

For anyone else looking to backup their system drive (local or remote storage) I found the unicorn.. Vorta

It has more functionality than needed for basic backup (remote repositories, backing up remote storage drives, etc..) but it will backup your system drive to local storage if desired, and to a multitude of drive formats (etx4,ntfs,fat32.. and hfs I'm sure as it is a also a MacOS app, though you might need hfs support installed on your Linux box).

The archive is also compressed so it is a fraction of your actual data size.

Haven't done any type of restore of course, but the process seems pretty basic.