Table 122 Read Verify Sector(S) Ext Command (42H); Read Verify Sector(S) Ext (42H) - Hitachi HDS723020BLA642 Specifications
3.5 inch serial ata hard disk drive
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Also See for HDS723020BLA642:
- Datasheet (2 pages) ,
- Quick installation manual (3 pages) ,
- Quick installation manual (3 pages)
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11.28 Read Verify Sector(s) Ext (42h)
Command Block Output Registers
Register
Data Low
Data High
Current
Feature
Previous
Current
Sector Count
Previous
Current
Sector
Number
Previous
Current
Cylinder Low
Previous
Current
Cylinder High
Previous
Device/Head
Command
Error Register
7
6
5
4
CRC
UNC
0
IDN
0
V
0
V
Table 122 Read Verify Sector(s) Ext Command (42h)
The Read Verify Sector(s) Ext verifies one or more sectors on the device. No data is transferred to the host.
The difference between the Read Sector(s) Ext command and the Read Verify Sector(s) Ext command is
whether the data is transferred to the host or not.
If an uncorrectable error occurs, the Read Verify Sector(s) Ext will be terminated at the failing sector.
7
6
5
4
3
2
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
1
1
1
D
-
-
-
0
0
1
0
0
0
1
3
2
1
0
ABT
T0N
0
V
0
Hitachi hard disk drive specifications
Command Block Input Registers
0
Register
-
Data Low
-
Data High
-
Error
-
V
HOB=0
Sector Count
V
HOB=1
V
HOB=0
Sector
Number
V
HOB=1
V
HOB=0
Cylinder Low
V
HOB=1
V
HOB=0
Cylinder High
V
HOB=1
-
Device/Head
0
Status
0
7
6
AMN
BSY
RDY
DF
0
0
V
179
7
6
5
4
3
-
-
-
-
-
-
-
-
-
-
...See Below...
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
-
-
-
-
-
...See Below...
Status Register
5
4
3
2
DSC DRQ COR
0
V
-
0
2
1
0
-
-
-
-
-
-
-
-
-
-
-
-
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
-
-
-
1
0
IDX
ERR
-
V
- Quick Links:
- Table 1 Type and Model
- General Features
- Data Sheet
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