IBM IC25N020ATDA04 Hard Drive Specifications - Page 137

Format Unit F7h: vendor specific

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13.7 Format Unit (F7h: vendor specific) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature V V V V V V V V Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 1 0 1 1 1 Command Block Input Registers Register 7 6 5 4 3 2 1 0 Data Error see below Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status see below Error Register 7 6 5 4 3 210 CRC UNC 0 IDN 0 ABT T0N AMN 0 0 0 V 0 V00 Status Register 7 6 5 4 3 2 10 BSY RDY DF DSC DRQ COR IDX ERR 0 V 0 V - 0 -V Figure 84. Format Unit command (F7h) The Format Unit command initializes all user data sectors after merging the 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 this command's completion. This commands completion is also used on the next power on reset or hard reset. Both previous information data are erased from the device by this command. Note that the Format Unit command initializes from LBA 0 to Native MAX LBA. Host MAX LBA is set by Initialize Drive Parameter or Set MAX ADDRESS command is ignored. The protected area by Set MAX ADDRESS command is also initialized. The Security Erase Prepare command should be completed immediately 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. If the Feature register is NOT 11h, the device returns an Abort error to the host. This command does not request to do a data transfer. Output Parameters To The Device Feature This indicates the Destination code for this command. 11H The merge reassigned location into the defect information. Travelstar 48GH, 30GN & 15GN hard disk drive specifications 123

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13.7
Format Unit (F7h: vendor specific)
see below
Status
1 1 1 1 0 1 1 1
Command
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Sector Count
- - - - - - - -
Sector Count
see below
Error
V V V V V V V V
Feature
- - - - - - - -
Data
- - - - - - - -
Data
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Register
Command Block Input Registers
Command Block Output Registers
V
-
0
-
V
0
V
0
0
0
V
0
V
0
0
0
ERR
IDX
COR
DRQ
DSC
DF
RDY
BSY
AMN
T0N
ABT
0
IDN
0
UNC
CRC
0
1
2
3
4
5
6
7
0
1
2
3
4
5
6
7
Status Register
Error Register
Figure 84. Format Unit command (F7h)
The Format Unit command initializes all user data sectors after merging the reassigned sector location
into the defect information of the device and clearing the reassign information. Both new reassign infor-
mation and new defect information are available right after this command's completion. This commands
completion is also used on the next power on reset or hard reset. Both previous information data are
erased from the device by this command.
Note that the Format Unit command initializes from LBA 0 to Native MAX LBA. Host MAX LBA is set by
Initialize Drive Parameter or Set MAX ADDRESS command is ignored. The protected area by Set MAX
ADDRESS command is also initialized.
The Security Erase Prepare command should be completed immediately prior to the Format Unit com-
mand. If the device receives a Format Unit command without a prior Security Erase Prepare command the
device aborts the Format Unit command.
If the Feature register is NOT 11h, the device returns an Abort error to the host.
This command does not request to do a data transfer.
Output Parameters To The Device
Feature
This indicates the
Destination code for this command.
11H
The merge reassigned location into the defect information.
Travelstar 48GH, 30GN & 15GN hard disk drive specifications
123