I purchased EaseUS Todo Backup 11.0 (upgrade) today. I really like the software, and the newest version made some improvements on the UI, so I felt it was worth the $15 upgrade price.
I have created a Todo Backup Linux recovery disk on a USB flash drive. So if I want to recover my system, I need to insert this USB flash drive into a USB port. Simple enough.
But I got to thinking that since I already have Ubuntu 18.04 installed permanently on my HDD (dual-boot from Grub to Windows 7 or 10), why not just install a Todo Backup recovery utility in Ubuntu? But there doesn't appear to be any such animal. When I created the Linux recovery disc from Todo Backup, it downloades its own .iso file and burns a special version of Linux (not sure whether it's Ubuntu or not) that only runs the Todo Backup Recovery utility.