Error 0xC03A001F

Value: -1069940705 | 0xC03A001F | 3225026591

What does it mean ?

ERROR_VIRTDISK_DISK_ONLINE_AND_WRITABLE  
The disk must be offline or read-only.
Value: 31 | 0x001F | 0b0000000000011111

Where does it come from ?

FACILITY_USERMODE_VHD  
User mode virtual hard disk support
Value: 58 | 0x03A | 0b00111010

Other Errors for FACILITY_USERMODE_VHD