200MB "system drive"

Good morning,
my business laptop lately shows 200MB "system drive", where only the Boot manager should be located. No idea how I did it exactly, I dont even have admin rights there.
Is it possible to hide this partition as it used to be?

Did some research already, but definitely need your advise which way to go:

A. Cant do it in windows - limited rights

B. via windows installation USB/command prompt:

1. option:
diskpart
list volume
select volume [..]
remove letter [..]
- this doesnt work, after restart the windows just assigns the letter again

2.option
diskpart
select disk [..]
select partition [..]
set id = 17 (17 for hidden)
- would like to try this, but have no idea, whats my id now..(would like to change it back, if it doesn't work)

3.option
mountvol [..]:\ /D
The /D argument stands for dismount.
- wont this option crap up my boot?

Thx a lot!

Welcome to the forum. It should be seen in disk Management but nothing else. If it's seen in explorer then simply in disk Management remove the drive letter then you won't see it

hi,

thx for answer, but unfortunately I can’t run disk Management in Windows - business laptop=limited rights.

Is there a way to fix via windows installation USB/command prompt please?
Thank you.