Format Unit (F7H); Table 83.Format Unit Command (F7H) - Hitachi 7K80 - Deskstar - Hard Drive Specifications

12.9 Format Unit (F7h)

Table 84: Format Unit command (F7h)
Command Block Output Registers
Register
Data
Feature
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Command
Error Register
7 6 5
CRC UNC 0
0 V 0
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 immediately after the completion of this command and are also used on the next
power-on reset or hard reset. This command erases both previous information data from the device.
Note that the Format Unit command initializes from LBA 0 to Native MAX LBA regardless of the setting by the
Initialize Device Parameter (91h) command or the Set Max Address (F9h) command, so that the protected area
defined by these commands is also initialized.
The Security Erase Prepare (F3h) 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.
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 a data transfer.
Command execution time depends on drive capacity.
To determine the command time-out value, refer to Word 89 of Identify Device data should be referred.
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
4 3 2 1
IDN 0 ABT T0N AMN
V 0 V 0
Deskstar 7K80 Hard Disk Drive Specification
Command Block Input Registers
Register
Data
Error
Sector Count
Sector Number
Cylinder Low
Cylinder High
Device/Head
Status
0 7 6
BSY RDY DF DSC DRQ
0 0 V
134
7 6 5 4 3 2 1 0
- - - - - - - -
see below
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
- - - - - - - -
see below
Status Register
5 4 3 2
COR IDX
0 V 0 0
1 0
ERR
- V