360050398

10.8.42.6

SMART Read Log Sector

 

 

 

 

 

 

 

 

COMMAND CODE

 

1 0 1 1 0 0 0 0

REGISTER

 

 

 

REGISTER SETTING

NORMAL COMPLETION

 

DR

 

 

DRIVE No.

no change

 

CY

 

 

C24Fh

no change

 

HD

 

 

 

 

no change

 

SN

 

Log Sector Address

no change

 

SC

 

Number of sectors to read

00h

 

FT

 

 

 

D5h

no change

This command returns the indicated log sector contents to the host.

Sector count -specifies the number of sectors to be read from the specified log. The log transferred by the drive shall start at the first sector in the specified log, regardless of the sector count requested.

Sector number indicates the log sector to be returned as described in the following Table.

Log Sector

 

Log sector address

Content

R/W

 

00h

Log directory

RO

 

01h

SMART error log

RO

 

02h

Comprehensive SMART error log

RO

 

03h

Extended comprehensive SMART error log

See Note

 

04h-05h

Reserved

RO

 

06h

SMART self-test log

RO

 

07h

Extended SMART self-test log

See Note

 

08h

Reserved

RO

 

09h

Selective self-test log

RO

 

0Ah-7Fh

Reserved

RO

 

80h-9Fh

Host vendor specific

R/W

 

A0h-FFh

Reserved

VS

 

Key

 

 

 

RO –Log is read only by the host.

 

 

R/W –Log is read or written by the host.

 

 

VS –Log is vendor specific thus read/write ability is vendor specific.

 

 

NOTE - Log addresses 03hand 07h are used by the READ LOG EXT and WRITE LOG

 

EXT commands. If these log addresses are used with the SMART READ LOG

 

command, the device shall return command aborted.

 

10.8.42.6.1 SMART log directory

 

 

The following table defines the 512 bytes that make up the SMART Log Directory.The SMART Log Directory is SMART Log address zero, and is defined as one sector long.

 

SMART Log Directory

Byte

Descriptions

0-1

SMART Logging Version

2

Number of sectors in the log at log address 1

3

Reserved

4

Number of sectors in the log at log address 2

5

Reserved

510

Number of sectors in the log at log address 255

511

Reserved

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