Knowledge Base - OEM partition created is almost full

It has been happening with new update that new drive is getting uncovered. You can do following to hide it and there will no harm anywhere.

Type cmd in Windows Start Search box (Cortana) > Right click and run as Administrator
Give following command and Enter: diskpart
Now another window will be opened having diskpart.exe
Give following command and Enter: list volume
Give following command and Enter: select volume f
(here n is volume number which you want to remove)
Give following command and Enter: remove letter=f

Page: https://answers.microsoft.com/en-us/windows/forum/windows_10-files/new-oem-partition-created-in-windows-version-1803/0932d4be-0dfb-4261-b03b-cbaa32e73068

Original source:  https://social.technet.microsoft.com/Forums/en-US/ed20a445-dae2-4883-8853-955983a37fc8/how-to-remove-phantom-drives?forum=win10itprogeneral