Seagate ST9250421ASG ユーザーズマニュアル

Momentus 7200.3 SATA Product Manual, Rev. C

27

The Identify Device command (command code EC

H

) transfers information about the drive to the host following 

power up. The data is organized as a single 512-byte block of data, whose contents are shown in the table on 
page 27. All reserved bits or words should be set to zero. Parameters listed with an “x” are drive-specific or 
vary with the state of the drive. See Section 2.0 on page 3 for default parameter settings.

The following commands contain drive-specific features that may not be included in the Serial ATA specifica-
tion.

Standby Immediate

94h or E0h

Security Set Password

F1h

Security Unlock

F2h

Security Erase Prepare

F3h

Security Erase Unit

F4h

Security Freeze Lock

F5h

Security Disable Password

F6h

 

 

0

Configuration information:

 

• Bit 15: 0 = ATA; 1 = ATAPI

 

• Bit 7: removable media

 

• Bit 6: removable controller

 

• Bit 0: reserved

0C5A

H

1

Number of logical cylinders

16,383

2

ATA-reserved

0000

H

3

Number of logical heads

16

4

Retired

0000

H

5

Retired

0000

H

6

Number of logical sectors per logical track: 63

003F

H

7–9

Retired

0000

H

10–19

Serial number: (20 ASCII characters, 0000

H

 = none)

ASCII

20

Retired

0000

H

21

Retired

0400

H

22

Obsolete

0000

H

23–26

Firmware revision (8 ASCII character string, padded with 

blanks to end of string)

x.xx