MrLinux that is exactly what I just did, very fast and effective. This will give all the flash sticks I have a new life. I can even make a raid system of backups and be sure to never lose it, even if a flash stick gets lost. Anyway, I did backup all my apps and files then I run the integrity check which failed for some apps (not a big deal, like the calculator app couldn't be backed up and of course I didn't intended to do it, but I didn't see an option to select them before the process began) and provided a positive output for files.
I think I'll get myself an old P6 or 7 in order to make some test and be sure that in the worst case scenario I can bring my system back to life.