Format Unit (F7H: Vendor Specific) - IBM DBCA-204860 - Travelstar 4.8 GB Hard Drive Specifications

12.5 Format Unit (F7h: Vendor Specific)

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 64. Format Unit Command (F7h)
The Format Unit command initializes all user data sectors after merging 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 right after this command completion, and are also used on next power
on reset or hard reset. Both previous information are erased from the device by this command.
Note that the Format 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.
The security erase prepare 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.
If Feature register is N O T 11h, the device returns Abort error to the host.
This command does not request to data transfer.
Output Parameters To The Device
Feature Destination code for this command.
11H Merge reassigned location into the defect information
104
O E M Specifications of DBCA-2xxxxx 2.5 inch H D D
7 6 5 4 3 2 1 0
V V V V V V V V
1 1 D
1 1 1 1 0 1 1 1
4 3 2 1 0
0 A B T T 0 N A M N
V 0 V 0 0
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 7 6 5 4 3 2 1 0
D a t a
E r r o r . . . S e e B e l o w . . .
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 e e B e l o w . . .
S t a t u s R e g i s t e r
7 6 5 4 3
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
2 1 0
0 V