Error 0x80310019

Value: -2144272359 | 0x80310019 | 2150694937

What does it mean ?

FVE_E_NOT_DATA_VOLUME  
The operation attempted cannot be performed on an operating system drive.
Value: 25 | 0x0019 | 0b0000000000011001

Where does it come from ?

FACILITY_FVE  
Full volume encryption
Value: 49 | 0x031 | 0b00110001

Other Errors for FACILITY_FVE