Thanks for your explanation above. Main problem is not mixing this 2 methods, I think - that's normal in Windows too, connected to masstorage you can't use Filebox in MyDocs at the same time, and if mounted /home, /rootfs etc with Paragon you can't use them either. And you have to choose masstorage or SDK(ssh)/Putty can't do both.
In Ubuntu you dont need Paragon to get device mounted to PC and terminal act as Cmd on Windows (meaning on PC)
But strange thing and my misunderstanding here starts with Ubiboot behavior as I see it, because terminal - and Putty too ! - suddenly can be on device (n9) in maintenance mode - which not the case in Windows (Cmd) - or is it ? -and you have this mounting problem I get into? Is that correct understood?