Security Disable Password (F6H) - IBM DTTA-351010 - Deskstar 10.1 GB Hard Drive Specifications

12.19 Security Disable Password (F6h)

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 97. Security Disable Password Command (F6h)
The Security Disable Password command disables the security mode feature ( device lock function).
The Security Disable Password command requests a transfer of a single sector of data from the host
including information specified in Figure 98. Then the device checks the transferred password. If the User
Password or Master Password matches the given password, the device disables the security mode feature
(device lock function). This command does not change the Master Password which may be re-activated
later by setting User Password. This command should be executed in device unlock mode.
W o r d
0 0
0 1 1 6
1 7 2 5 5
Figure 98. Password Information for Security Disable Password command
The device will compare the password sent from this host with that specified in the control word.
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 pass-
word against the master password stored internally.
130
O E M Specifications for DTTA-3xxxxx
7 6 5 4 3 2 1 0
1 1 D
1 1 1 1 0 1 1 0
4 3 2 1 0
0 A B T T 0 N A M N
0 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 )