Fujitsu MHY2250BH Product/Maintenance Manual page 163

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DEVICE CONFIGURATION RESTORE (Features Field = C0h)
The DEVICE CONFIGURATION RESTORE command disables any setting
previously made by a DEVICE CONFIGURATION SET command and returns
the content of the IDENTIFY DEVICE command response to the original settings
as indicated by the data returned from the execution of a DEVICE
CONFIGURATION IDENTIFY command. After execution of this command, the
settings are kept regardless of the power-on or COMRESET execution.
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Error reporting conditions
(1) The device is in the Device Configuration Freeze Lock state
(ST = 51h, ER = 04h).
(2) The command was received before the DEVICE CONFIGURATION SET
command was issued (ST = 51h, ER = 04h).
(3) The SET MAX ADDRESS (EXT) command (F9h, 37h) has been specified
with a value in the Host Protected Area (ST = 51h, ER = 04h).
(4) A SATA communication error occurred (ST = 51h, ER = 14h).
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DEVICE CONFIGURATION FREEZE LOCK (Features Field = C1h)
The DEVICE CONFIGURATION FREEZE LOCK command prevents accidental
modification of the Device Configuration Overlay settings. After successful
execution of a DEVICE CONFIGURATION FREEZE LOCK command, all
DEVICE CONFIGURATION SET, DEVICE CONFIGURATION FREEZE
LOCK, DEVICE CONFIGURATION IDENTIFY, and DEVICE
CONFIGURATION RESTORE commands are aborted by the device. The
DEVICE CONFIGURATION FREEZE LOCK condition is cleared by a power-
down, not cleared by a COMRESET or software reset.
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Error reporting conditions
(1) The device is in the Device Configuration Freeze Lock state
(ST = 51h, ER = 04h).
(2) A SATA communication error occurred (ST = 51h, ER = 14h).
C141-E262
5.3 Host Commands
5-85