Intel Extensible Firmware Interface Specification page 198

Extensible Firmware Interface Specification
Status Codes Returned
EFI_SUCCESS
EFI_WRITE_PROTECTED
EFI_NO_MEDIA
EFI_MEDIA_CHANGED
EFI_DEVICE_ERROR
EFI_BAD_BUFFER_SIZE
EFI_INVALID_PARAMETER
180
The data were written correctly to the device.
The device cannot be written to.
There is no media in the device.
MediaId
The is not for the current media.
The device reported an error while attempting to perform the write
operation.
The parameter is not a multiple of the intrinsic block
BufferSize
size of the device.
The write request contains LBAs that are not valid, or the buffer is
not on proper alignment.
12/12/00 Version 1.02