I don't even do disk images anymore.
Linux Mint comes with Timeshift. I just leave it at the default setting, which is an incremental back-up every week. And it keeps the last 3.
And if that fails, I have install scripts that have a big chunk of my setup automated.
So the only thing I need to make a point of backing up is my user data. I should probably have a better process for that.
I still have a Windows install, but I don't use it enough to bother with backup images.