Error 0x8004255E

Value: -2147211938 | 0x8004255E | 2147755358

What does it mean ?

VDS_E_INVALID_DRIVE_LETTER  
The specified drive letter is invalid.
Value: 9566 | 0x255E | 0b0010010101011110

Where does it come from ?

FACILITY_ITF  
COM/OLE Interface management. FACILITY_ITF is designated for user-defined error codes returned from interface methods
Value: 4 | 0x004 | 0b00000100

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