Hitachi HDS723020BLA642 - Table 133 Security Unlock Information

Hitachi hard disk drive specifications
191
When this counter reaches zero then all password protected commands are rejected until a hard reset or a
power off.
Word
Description
00
Control word
bit 0
: Identifier (1-Mater, 0-User)
bit 1-15
: Reserved
01-16
Password
(32 bytes)
17-255
Reserved
Table 133 Security Unlock Information
Identifier
Zero indicates that device regards Password as User Password. One indicates that device
regards Password as Master Password.
The user can detect if the attempt to unlock the device has failed due to a mismatched password as this is the
only reason that an abort error will be returned by the file AFTER the password information has been sent to the
device. If an abort error is returned by the device BEFORE the password data has been sent to the file then
another problem exists.