Hi, I've only ever come across usb creators on other distributions. Separate from this are things like System Rescue CD:
https://www.system-rescue-cd.org/Ultimate Boot CD:
http://www.ultimatebootcd.com/Rescatux - (but I never had any success with it):
https://www.supergrubdisk.org/rescatux/The best way to protect yourself is to use something like Rescuezilla - this is the new name for redobackup, even though you will still see 'redobackup' after creating the .iso from the files - if you don't know how to do this I can PM you the link to the one I created. Basically you need an external hard drive - the bigger the better. I usually go for 2 Tb drives. Generally I just backup the /home folder so that I keep my data and include all hidden files by ensuring that all files starting with a period are shown and just drag across to a folder created on external drive. If you want a complete system backup, that is where rescuezilla comes in - it backs up your entire system and to restore you just launch it and choose the option you want. It also helps to do a manual partition before installing, that way if the root file system ('/') goes west, that is all you need to reinstall (apart from setting up email again and printers), as your '/home' partition setup separately will remain intact.
rescuezilla:
https://rescuezilla.com/
