Dear @levone1, @rinigus already has been pointed to this issue by an @-mention in mount-sdcard's issue #41 (pointing directly to the corresponding issue here, instead mount-sdcard in general).

But as neither you or I have something specific to ask or suggest yet, I think it is a bit premature to push for a reaction (to what question?).
And IMO this is the wrong place (again; as FSO is)!
From my experience and perspective it is solely getting on ones nerves, when people try to make their issues known in as many places as possible quickly.

And IMO, that you seem to have wrecked your SFOS installation somehow ultimately falls back on you: While mount-sdcard makes all these system partitions user accessible, it does not alter them. If you destroyed your SFOS installation leveraging mount-sdcard, you must have performed additional steps to write on them.