Seagate ST4000NM0044 Manual Do Utilizador
Seagate Enterprise Capacity 3.5 HDD v4 Serial ATA Product Manual, Rev. C
32
6.3.1
Identify Device command
The Identify Device command (command code EC
H
) transfers information about the drive to the host following power up.
All
reserved
bits
The following commands contain drive-specific features that may not be included in the Serial ATA specification.
Write Sectors
30
H
Write Sectors Without Retries
31
H
Write Sectors Extended
34
H
Write Uncorrectable
45
H
Word
Description
Value
0
Configuration information:
• Bit 15: 0 = ATA; 1 = ATAPI
• Bit 7: removable media
• Bit 6: removable controller
• Bit 0: reserved
• 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)
(8 ASCII character string, padded with blanks to end of string)
x.xx
27–46
Drive model number:
(40 ASCII characters, padded with blanks to end of string)
(40 ASCII characters, padded with blanks to end of string)
47
(Bits 7–0) Maximum sectors per interrupt on Read multiple and Write multiple (16)
8010
H
48
Trusted computing feature set options
4001
H
49
Standard Standby timer, IORDY supported and may be disabled
2F00
H
50
ATA-reserved
0000
H
51
PIO data-transfer cycle timing mode
0200
H
52
Retired
0200
H
53
Words 54–58, 64–70 and 88 are valid
0007
H
54
Number of current logical cylinders
xxxx
H
55
Number of current logical heads
xxxx
H
56
Number of current logical sectors per logical track
xxxx
H
57–58
Current capacity in sectors
xxxx
H
59
Number of sectors transferred during a Read Multiple or Write Multiple command
xxxx
H
Command name
Command code (in hex)