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Table 5.4
Command name
STANDBY IMMEDIATE
SLEEP
CHECK POWER MODE
SMART
FLUSH CACHE
SECURITY DISABLE PASSWORD
SECURITY ERASE PREPARE
SECURITY ERASE UNIT
SECURITY FREEZE LOCK
SECURITY SET PASSWORD
SECURITY UNLOCK
SET MAX ADDRESS
READ NATIVE MAX ADDRESS
Notes:
FR : Features Register
SC : Sector Count Register
SN : Sector Number Register
R: R = 0 or 1
Y: Necessary to set parameters
Y*: Necessary to set parameters under the LBA mode.
N: Necessary to set parameters (The parameter is ignored if it is set.)
N*: May set parameters
D: The device parameter is valid, and the head parameter is ignored.
D*: The command is addressed to the master device, but both the master device and the
slave device execute it.
X: Do not care
Command code and parameters (2 of 2)
Command code (Bit)
7
6
5
4
3
1
0
0
1
0
1
1
1
0
0
1
0
0
1
1
1
1
1
0
0
1
0
0
1
1
1
1
1
0
0
1
0
1
1
0
1
1
1
0
0
1
1
1
1
0
1
1
1
1
0
1
1
1
1
0
1
1
1
1
0
1
1
1
1
0
1
1
1
1
0
1
1
1
1
1
1
1
1
1
1
CY: Cylinder Registers
DH : Drive/Head Register
C141-E090-02EN
Parameters used
2
1
0
FR SC SN CY DH
1
0
0
N
N
N
0
0
0
0
0
1
N
N
N
1
1
0
0
0
0
N
N
N
1
0
1
0
0
0
Y
Y
Y
1
1
1
N
N
N
1
1
0
N
N
N
0
1
1
N
N
N
1
0
0
N
N
N
1
0
1
N
N
N
0
0
1
N
N
N
0
1
0
N
N
N
0
0
1
N
Y
Y
0
0
0
N
N
N
N
D
N
D
N
D
Y
D
N
D
N
D
N
D
N
D
N
D
N
D
N
D
Y
Y
N
D
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