Security Erase Unit (F4H) - IBM DBCA-204860 - Travelstar 4.8 GB Hard Drive Specifications

12.21 Security Erase Unit (F4h)

C o m m a n d B l o c k O u t p u t R e g i s t e r s
R e g i s t e r
D a t a
F e a t u r e
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
C o m m a n d
E r r o r R e g i s t e r
7 6 5
C R C U N C 0 I D N
0 0 0
Figure 87. 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 Address command is ignored. So the protected area by Set Max
Address command is also initialized.
This command requests to transfer a single sector data from the host including information specified in
Figure 88.
If the password does not match then the device rejects the command with an Aborted error.
W o r d
0 0
0 1 1 6
1 7 2 5 5
Figure 88. Erase Unit information
7 6 5 4 3 2 1 0
1 1 D
1 1 1 1 0 1 0 0
4 3 2 1 0
0 A B T T 0 N A M N
V 0 V 0 0
D e s c r i p t i o n
C o n t r o l w o r d
b i t 0 : I d e n t i f i e r ( 1
b i t 1 1 5 : R e s e r v e d
P a s s w o r d
R e s e r v e d
C o m m a n d B l o c k I n p u t R e g i s t e r s
R e g i s t e r
D a t a
E r r o r
S e c t o r C o u n t
S e c t o r N u m b e r
C y l i n d e r L o w
C y l i n d e r H i g h
D e v i c e / H e a d
S t a t u s
S t a t u s R e g i s t e r
7 6 5 4
B S Y R D Y D F D S C D R Q C O R I D X E R R
0 V 0 V
M a s t e r , 0
( 3 2 b y t e s )
7 6 5 4 3 2 1 0
. . . S e e B e l o w . . .
. . . S e e B e l o w . . .
3 2 1 0
0 V
U s e r )
133
Command Descriptions