Hitachi HDS728080PLAT20 Specifications - Page 190

Security Erase Unit F4h

Page 190 highlights

12.32 Security Erase Unit (F4h) Table 127: Security Erase Unit (F4h) Command Block Output Registers Register 7 6 5 4 3 2 1 0 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 - 1 D - - - - Command 1 1 1 1 0 1 0 0 76 CRC UNC 00 Error Register 54 3 2 1 0 0 IDN 0 ABT T0N AMN 0V 0 V 0 0 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 Status Register 7 654 3 2 1 0 BSY RDY DF DSC DRQ COR IDX ERR 0 V0V - 0 - V The Security Erase Unit command initializes all user data sectors and then disables the device lock function. Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA. The Host MAX LBA is set by the Initialize Drive Parameter or the Set MAX ADDRESS command is ignored. The protected area by the Set MAX ADDRESS command is also initialized. This command requests the transfer of a single sector of data from the host including information specified in the table below. If the password does not match, the device rejects the command with an Aborted error. Table 128: Erase Unit information Word Description 00 Control Word bit 0 : Identifier (1- Master, 0- User) bit 1 : Erase mode (1- Enhanced, 0 - Normal) [Enhanced mode is not supported] bit 2-15 : Reserved 01-16 Password (32 bytes) 17-255 Reserved Identifier Zero indicates that the device should check the supplied password against the user password stored internally. One indicates that the device should check the given password against the master password stored internally. The Security Erase Unit command erases all user data and disables the security mode feature (device lock function). After the completion of this command, all the user data will be initialized to zero with a write operation. At this time, the data write is not verified with a read operation to determine if the data sector is initialized correctly. Deskstar 7K80 Hard Disk Drive Specification 186

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Deskstar 7K80 Hard Disk Drive Specification
186
12.32
Security Erase Unit (F4h)
Table 127: Security Erase Unit (F4h)
The Security Erase Unit command initializes all user data sectors and then disables the device lock function.
Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA. The Host MAX LBA is
set by the Initialize Drive Parameter or the Set MAX ADDRESS command is ignored. The protected area by the
Set MAX ADDRESS command is also initialized.
This command requests the transfer of a single sector of data from the host including information specified in the
table below.
If the password does not match, the device rejects the command with an Aborted error.
Table 128: Erase Unit information
Identifier
Zero indicates that the device should check the supplied password against the user pass-
word stored internally. One indicates that the device should check the given password
against the master password stored internally.
The Security Erase Unit command erases all user data and disables the security mode feature (device lock func-
tion). After the completion of this command, all the user data will be initialized to zero with a write operation. At
this time, the data write is not verified with a read operation to determine if the data sector is initialized correctly.
Command Block Output Registers
Command Block Input Registers
Register
7 6 5 4 3 2 1 0
Register
7 6 5 4 3 2 1 0
Data
- - - - - - - -
Data
- - - - - - - -
Feature
- - - - - - - -
Error
see below
Sector Count
- - - - - - - -
Sector Count
- - - - - - - -
Sector Number
- - - - - - - -
Sector Number
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder Low
- - - - - - - -
Cylinder High
- - - - - - - -
Cylinder High
- - - - - - - -
Device/Head
1 - 1 D - - - -
Device/Head
- - - - - - - -
Command
1 1 1 1 0 1 0 0
Status
see below
Error Register
Status Register
7
6
5
4
3
2
1
0
7
6
5
4
3
2
1
0
CRC UNC 0 IDN 0 ABT T0N AMN
BSY RDY DF DSC DRQ COR IDX ERR
0
0
0
V
0
V
0
0
0
V
0
V
-
0
-
V
Word
Description
00
Control Word
bit 0
: Identifier (1- Master, 0- User)
bit 1
: Erase mode (1- Enhanced, 0 - Normal)
[Enhanced mode is not supported]
bit 2-15
: Reserved
01-16
Password (32 bytes)
17-255 Reserved