What does mount system do in Android recovery?

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Tags

1. #partition
2. #software
3. #booting
4. #android
5. #device
6. #files
7. #system
8. #access
9. #piece
10. #enabling
11. #update
12. #without
13. #small
14. #process
15. #possible
16. #phone
17. #loading
18. #recovery
19. #install
20. #power