Options for backing up Operating System separately from your personal files would be Timeshift and Systemback. Not familiar with ones for Personal files because I keep Personal files on USB/Flash drive.
I think you are trying to Backup the whole system 200GB, do you have enough space for this? and is your computer set up to not hibernate or something similar?
Someone else will have some solutions for you also. I will leave the two mentioned Programs below in case they are of help. I think most here are keeping Personal Files Backed up separately with Clonezilla or something similar, then Re-Installing the Operating System if needed, this is where having a "home" Partition will come into help, or an External Backup Drive.
Perhaps you are running into a problem with "Redo Backup" because you don't have enough space at your backup destination? Or Destination it is not formatted correctly? I'm not familiar with Redo Backup but here is a tutorial that might help.
Timeshift acts as a System Restore like in Windows. NOTE: You will need a place to store your Snapshots, I use a separate "home" partition to do this, have tried doing this with a USB but did not work. It will also need to be Formatted as ext4.
Systemback can also do other things, like creating a custom iso that you can burn to a disk with all your Packages included if the Disk is big enough.
I have a better Tutorial on how to use this but the pictures don't seem to be working today, for me anyhow. I will include it in #2 link.