10.8.42.6.2.4 Error data structure

The error data structure will contain the error description of the command for which an error was reported as described in the following table.

 

Error data structure

Byte

Descriptions

N

Reserved

n+1

Content of the Error register after command completion occurred.

n+2

Content of the Sector Count register after command completion occurred.

n+3

Content of the Sector Number register after command completion occurred.

n+4

Content of the Cylinder Low register after command completion occurred.

n+5

Content of the Cylinder High register after command completion occurred.

n+6

Content of the Device/Head register after command completion occurred.

n+7

Content written to the Status register after command completion occurred.

n+8 - n+26

Extended error information

n+27

State

n+28

Life timestamp (least significant byte)

n+29

Life timestamp (most significant byte)

Extended error information will be vendor specific.

State will contain a value indicating the state of the device when command was written to the Command register or the reset occurred as described in the following Table.

 

State field values

Value

State

x0h

Unknown

x1h

Sleep

x2h

Standby

x3h

Active/Idle with BSY cleared to zero

x4h

Executing SMART off-line or self-test

x5h-xAh

Reserved

xBh-xFh

Vendor unique

The value of x is vendor specific and may be different for each state.

Sleep indicates the reset for which the error is being reported was received when the device was in the Sleep mode.

Standby indicates the command or reset for which the error is being reported was received when the device was in the Standby mode.

Active/Idle with BSY cleared to zero indicates the command or reset for which the error is being reported was received when the device was in the Active or Idle mode and BSY was cleared to zero.

Executing SMART off-line or self-test indicates the command or reset for which the error is being reported was received when the device was in the process of executing a SMART off-line or self-test.

Life timestamp will contain the power-on lifetime of the device in hours when command completion occurred.

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