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26 Medalist 17242, 13032, 10232, 8422 and 4312, Rev. A
The following commands contain drive-specific features that may not be
described in the
Draft ATA-4 Standard
.
3.2.2 Identify Drive command
The Identify Drive 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
below. 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 drive
specifications in Section 1 of this manual for default parameter settings.
Note.
If the alternate capacity jumper is installed on these drives, the
drive capacity is reduced in word 1 to 4,092 cylinders.
Word Description Value
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 (ST317242A)
16,383 (ST313032A)
16,383 (ST310232A)
16,383 (ST38422A)
8,354 (ST34312A)
3FFF
H
(ST317242A)
(ST313032A)
(ST310232A)
(ST38422A)
20A2
H
(ST34312A)
2 ATA-reserved
0000
H
3 Number of logical heads:
16 (ST317242A, ST313032A,
ST310232A, ST38422A,
ST34312A)
0010
H
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