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10.10 Format Unit (F7h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7
8
9
CRC UNC
0
IDN
0
V
0
Table 93 Format Unit Command (F7h)
The Format Unit command initializes all user data sectors after merging reassigned sector location into the
defect information of the device and clearing the reassign information. Both new reassign information and new
defect information are available right after command completion of this command. Previous information of
reassign and defect are erased from the device by executing this command.
Note that the Format Unit command initializes from LBA 0 to Native MAX LBA regardless of setting by Initialize
Device Parameter (91h) command, Device Configuration Overlay, or Set Max Address (F9h) command, so the
protected area defined by these commands is also initialized.
Security Erase Prepare (F3h) commands should be completed just prior to the Format Unit command. If the
device receives a Format Unit command without a prior Security Erase Prepare command, the device aborts the
Format Unit command.
All values in Feature register are reserved, and any values other than 11h should not be put into Feature
register.
This command does not request to data transfer.
Command execution time depends on drive capacity. To determine command timeout value, Word 89 of Identify
Device data should be referred.
HITACHI Deskstar & CinemaStar P7K500 Hard Disk Drive specification (Rev 1.1)
7
6
5
4
3
2
1
0
-
-
-
-
-
-
-
0
0
0
1
0
0
0
1
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
L
1
D
-
-
-
1
1
1
1
0
1
1
1
10
3
2
1
0
0
ABT T0N AMN
V
0
V
0
0
Command Block Input Registers
Register
7
6
-
Data
-
-
Error
-
Sector Count
-
-
-
Sector Number
-
-
-
Cylinder Low
-
-
-
Cylinder High
-
-
-
Device/Head
-
-
Status
Status Register
7
6
5
4
BSY RDY
DF
DSC DRQ COR IDX ERR
0
V
0
V
133
5
4
3
2
1
0
-
-
-
-
-
-
...See Below...
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
...See Below...
3
2
1
0
0
0
-
V
- Quick Links:
- Data Sheet
- Jumper Settings(Pata Model)
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