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Code
Binary Code Bit
Protocol Command
(Hex)
7
6
5
4
3
2
1
0
2
Write Multiple
C5
1
1
0
0
0
1
0
1
2
Write Multiple Ext
39
0
0
1
1
1
0
0
1
2
Write Multiple FUA Ext
CE
1
1
0
0
1
1
1
0
2
Write Sector(s)
30
0
0
1
1
0
0
0
0
2
Write Sector(s)
31
0
0
1
1
0
0
0
1
2
Write Sector(s) Ext
34
0
0
1
1
0
1
0
0
4
Write Stream DMA Ext
3A
0
0
1
1
1
0
1
0
4
Write Stream Ext
3B
0
0
1
1
1
0
1
1
3
Write Uncorrectable Ext
45
0
1
0
0
0
1
0
1
Protocol :
1 :
PIO data IN command
2 :
PIO data OUT command
3 :
Non data command
4 :
DMA command
5 :
DMA Queued command
+ :
Vendor specific command
Commands marked * are alternate command codes for previous defined commands.
135
Hard Disk Drive Specification