Status codes returned – Intel Extensible Firmware Interface User Manual
Page 625
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Protocols
— Network Support
Version 1.10
12/01/02
15-19
Status Codes Returned
EFI_SUCCESS
The NVRAM access was performed.
EFI_NOT_STARTED
The network interface has not been started.
EFI_INVALID_PARAMETER
One or more of the parameters has an unsupported value.
EFI_DEVICE_ERROR
The command could not be sent to the network interface.
EFI_UNSUPPORTED
This function is not supported by the network interface.
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