I'm looking at the screen shot, and reading it... i'm doing fine until i get over to the right side where all the action is, then... things get a little more confusing. "System upgrade"? What does that have to do with anything? And what do all those button labels really mean? Is there some tooltip for each one, or is it the usual "poke me and see"? I'm oldschool, i'm just not in line with the whole exploration-without-clues thang.
I'd offer an alternative but it won't run under Ubuntu-MATE yet, and it's imperfect anyway, but for something as critical as restoring or backing up a system, given the wide range of user knowledgability, i think anything offered as part of the MATE distro ought to be "butt stupid" so even i can use it.
Next time i've had to boot debian-jessie so i can do some backups conveniently i'll try to remember and capture a couple screenshots. Not to say "mine is better" just to offer another approach.
If it's time for linux distros to start offering something like this OOTB, it seems like we ought to do it right the first time if we can figure out what that means.
BTW and without threadjacking, what about BTRFS? Last time i looked was several years ago now, it looked like BTRFS had all the necessary stuff, lacking only a decent UI. For a distro-offered solution that might be worth considering too.
Was on debian a bit ago and captured some screenshots fwiw.
The second screenshot includes the rsync command that i use to back up a running system, fwiw. I have no recollection of what most of the rsync one-character options mean, but it's in the manpage somewhere.
What i'm trying to point out is that the two use different approaches. Systemback seems to take the Apple approach that the user is dumb and has no idea what any of it really does, and can be educated as to what "Update Stuff" might mean; the provider can then do whatever is easy behind the new labels to be learned by the user. OTOH partitionBackup assumes that the user knows exactly what he wants to do but doesn't care to type all the commands you have to remember to perform some basic function.
I have no clue whether that makes sense to anyone besides me, but i keep seeing the dumb-down-software approach coming out of gnome not because it makes it easier to use the computing tool, but because some end-user demographic has been educated to think things should be pictures you guess at.