What’s the best/easiest way for me to do a full backup of my Batocera system to a .IMG file that I can easily burn to a new SD card if needed?
personally i use Win32DiskImager for that
I use “USB Image Tool” from http://www.alexpage.de/ . Free, portable (no installation needed) and weighs less than 1MB. It can be used to write (restore) the image, too.