What is EFI Shell from filesystem device?

Related questions

1. Should I use UEFI or BIOS?
2. Do I have UEFI or Legacy BIOS?
3. How do I get to the EFI shell?
4. What does boot override mean?
5. How do I use EFI shell?
6. What is the advantage of UEFI?
7. What is ASUS EZ Mode?
8. What is UEFI in Linux?
9. What is an EFI shell?
10. Which is better UEFI or Legacy BIOS?

Tags

1. #scripting
2. #command
3. #formatted
4. #allowing
5. #prompt
6. #think
7. #instead
8. #scenarios
9. #partition
10. #including
11. #named
12. #items
13. #shell
14. #control
15. #installing
16. #booting
17. #properly
18. #directly
19. #system