HGST TRAVELSTAR 80GN 30GB ATA5 08K0910 User Manual
Product codes
08K0910
Travelstar 80GN Hard Disk Drive Specification
85
This command requests a transfer of a single sector of data from the host. The figure shown above defines the
content of this sector of information. The password supplied in the sector of data transferred is compared with the
stored Set Max password. If the password compare fails, then the device returns command aborted and decrements
the unlock counter. On the acceptance of the Set Max LOCK command, this counter is set to a value of five and is
decremented for each password mismatch when Set Max UNLOCK is issued and the device is locked. When this
counter reaches zero, then the Set Max UNLOCK command returns command aborted until a power cycle.
content of this sector of information. The password supplied in the sector of data transferred is compared with the
stored Set Max password. If the password compare fails, then the device returns command aborted and decrements
the unlock counter. On the acceptance of the Set Max LOCK command, this counter is set to a value of five and is
decremented for each password mismatch when Set Max UNLOCK is issued and the device is locked. When this
counter reaches zero, then the Set Max UNLOCK command returns command aborted until a power cycle.
The Set Max FREEZE LOCK command allows the host to disable the SET MAX commands (including Set Max
UNLOCK) until the next power cycle. When this command is accepted the device is in the Set Max Frozen mode.
UNLOCK) until the next power cycle. When this command is accepted the device is in the Set Max Frozen mode.
The password, the Set Max security mode, and the unlock counter do not persist over a power cycle but persist over
a hardware or software reset.
a hardware or software reset.
NOTE: If this command is immediately preceded by a Read Native MAX ADDRESS command, it shall be
interpreted as a Set Max ADDRESS command regardless of Feature register value.
interpreted as a Set Max ADDRESS command regardless of Feature register value.
Table 55: Set Max security mode transition
11.11 Address Offset Feature (vendor specific)
Computer systems perform initial code loading (booting) by reading from a predefined address on a disk drive. To
allow an alternate bootable operating system to exist in a reserved area on a disk drive this feature provides a Set
Features function to temporarily offset the drive address space. The offset address space wraps around so that the
entire disk drive address space remains addressable in offset mode. The Set Max pointer is set to the end of the
reserved area to protect the data in the user area when operating in offset mode. This protection can be removed by
a Set Max Address command to move the Set Max pointer to the end of the drive. But any commands which access
sectors across the original native maximum LBA are rejected with error, even if this protection is removed by a Set
Max Address command.
allow an alternate bootable operating system to exist in a reserved area on a disk drive this feature provides a Set
Features function to temporarily offset the drive address space. The offset address space wraps around so that the
entire disk drive address space remains addressable in offset mode. The Set Max pointer is set to the end of the
reserved area to protect the data in the user area when operating in offset mode. This protection can be removed by
a Set Max Address command to move the Set Max pointer to the end of the drive. But any commands which access
sectors across the original native maximum LBA are rejected with error, even if this protection is removed by a Set
Max Address command.
11.11.1 Enable/Disable Address Offset Mode
Subcommand code 09h Enable Address Offset Mode offsets address Cylinder 0, Head 0, Sector 1, LBA 0, to the
start of the nonvolatile protected area established using the Set Max Address command. The offset condition is
start of the nonvolatile protected area established using the Set Max Address command. The offset condition is