IBM DTCA-24090 Hard Drive Specifications - Page 138

Security Erase Unit

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12.21 Security Erase Unit (F4h) Command Block Output Registers Register 76543210 Data Feature Sector Count Sector Number Cylinder Low Cylinder High Device/Head 1 1D Command 11110100 Command Block Input Registers Register 76543210 Data Error ...See Below... Sector Count Sector Number Cylinder Low Cylinder High Device/Head Status ...See Below... Error Register 76543210 CRC UNC 0 IDN 0 ABT T0N AMN 000V0V00 Status Register 76543210 BSY RDY DF DSC DRQ COR IDX ERR 0V0V 0 V Figure 82. Security Erase Unit Command (F4h) The Security Erase Unit command initializes all user data sectors, then disables the device lock function. Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA. Host MAX LBA set by Initialize Drive Parameter or Set MAX LBA/CYL command is ignored. So the protected area by Set MAX LBA/CYL command is also initialized. This command requests to transfer a single sector data from the host including information specified in Figure 83. If the password does not match then the device rejects the command with an Aborted error. Word 00 01 16 17 255 Description Control word bit 0 : Identifier (1 Master, 0 bit 1 15 : Reserved Password ( 32 bytes ) Reserved User) Figure 83. Erase Unit information 130 OEM Specifications of DTCA-2xxxx 2.5 inch H D D

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12.21
Security Erase Unit
(F4h)
Command Block Output Registers
Command Block Input Registers
Register
76543210
Register
76543210
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
1D
Device/Head
Command
11110100
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
Figure 82. Security Erase Unit Command (F4h)
The Security Erase Unit command initializes all user data sectors, then disables the device lock function.
Note that the Security Erase Unit command initializes from LBA 0 to Native MAX LBA.
Host MAX
LBA set by Initialize Drive Parameter or Set MAX LBA/CYL command is ignored. So the protected area
by Set MAX LBA/CYL command is also initialized.
This command requests to transfer a single sector data from the host including information specified in
Figure 83.
If the password does not match then the device rejects the command with an Aborted error.
Word
Description
00
Control word
bit 0
: Identifier (1
Master, 0
User)
bit 1 15
: Reserved
01 16
Password
( 32 bytes )
17 255
Reserved
Figure 83. Erase Unit information
130
OEM Specifications of DTCA-2xxxx 2.5 inch HDD