I don't know anything about "Home User Backup" but I can give you a command that will work.
This command will make a mirror copy, including maintaining the permissions and ownership of your /home folder. Here is an example. We will change your name to fred.
sudo rsync -avr --delete /home/fred/ /media/sda3/BackUp
This duplicate will be stored in a folder called "BackUp" on sda3. You can update your backup at anytime by running this same command again.
This only works if both the source and destination folders are mounted. To restore the information to your /home you would reverse the source and destination folders and not use the delete. Like this.
sudo rsync -avr /media/sda3/BackUp/ /home/fred
Or, if you want to remove any corrupted stuff you might have in your home and put it back just as it was before, when you made the backup, you would use the "delete" command. This will give you an exact image of your backup in /home.
sudo rsync -avr --delete /media/sda3/BackUp/ /home/fred
If you don't want to see all the activity taking place, remove the "v" in all the examples above.