Error 0xC0380012

Value: -1070071790 | 0xC0380012 | 3224895506

What does it mean ?

ERROR_VOLMGR_DISK_NOT_EMPTY  
The specified disk is not empty.
Value: 18 | 0x0012 | 0b0000000000010010

Where does it come from ?

FACILITY_USERMODE_VOLMGR  
User mode volume manager
Value: 56 | 0x038 | 0b00111000

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