This is a screenshot of the twrp screen after you choose "Backup":
I have the following questions:
- What is the difference between the options "Boot, System and Data" on one hand, and "System Image" on the other?
- Is the "Data" option for data of system apps and user apps, or only system apps?
- I want to take a backup so that I can get a file that I can flash with Odin (that is, without requiring twrp). Which option should I use?
- What is "Vendor Image", and how does it differ from "System Image"?
- What is the difference between "Vendor" and "Vendor Image"?
Image
isdd
backup i.e. the exact copy of whole partition (to retain Verified Boot), the other one istar
backup i.e. the contents of filesystem. I don't think restoring TWRP backup through odin would be possible but I never used Samsung device. May be the Images can be restored. All of the remaining questions are answered once you know what these partitions contain.