10.8.31.4 Set Max Unlock

F9h with the content of the Features register equal to 03h.

COMMAND CODE

 

1 1 1 1 1 0 0 1

REGISTER

 

REGISTER SETTING

NORMAL COMPLETION

DR

 

DRIVE No.

no change

CY

 

 

 

no change

HD

 

 

 

no change

SN

 

 

 

no change

SC

 

 

 

no change

FT

 

 

03 H

no change

LBA

 

 

 

no change

This command is not immediately preceded by a READ NATIVE MAX ADDRESS command. If this command is immediately preceded by a READ NATIVE MAX ADDRESS command, it shall be interpreted as a SET MAX ADDRESS command.

This command requests a transfer of a single sector of data from the hostTable 10.8-7 defines the content of this sector of information.

The password supplied in the sector of data transferred shall be 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 shall be 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 shall return command aborted until a power cycle.

If the password compare matches, then the device shall make a transition to the Set_Max_Unlocked state and all SET MAX commands shall be accepted.

10.8.31.5

Set Max Freeze Lock

 

F9h with the content of the Features register equal to 04h

 

 

 

 

 

 

COMMAND CODE

1 1 1 1 1 0 0 1

REGISTER

 

 

 

REGISTER SETTING

NORMAL COMPLETION

 

DR

 

DRIVE No.

no change

 

CY

 

 

 

no change

 

HD

 

 

 

no change

 

SN

 

 

 

no change

 

SC

 

 

 

no change

 

FT

 

 

04 H

no change

 

LBA

 

 

 

no change

A SET MAX SET PASSWORD command shall previously have been successfully completed. This command is not immediately preceded by a READ NATIVE MAX ADDRESS command. If this command is immediately preceded by a READ NATIVE MAX ADDRESS command, it is interpreted as a SET MAX ADDRESS command. The SET MAX FREEZE LOCK command sets the device to Set_Max_Frozen state. After command completion any subsequent SET MAX commands are rejected.

Commands disabled by SET MAX FREEZE LOCK are:

SET MAX ADDRESS

SET MAX SET PASSWORD

SET MAX LOCK

SET MAX UNLOCK

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